# CVE-2021-45079: libcharon-extauth-plugins: In strongSwan before 5.9.5, a malicious responder can send an EAP-Successmessage too early without actually authentic...

CVE-2021-45079 is fixed in 21 products on 1 platform, first by DSA-5056-1, released January 24, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-45079
- Priority: High
- CVSS: 9.1 (Medium)
- EPSS: 0.0276
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 24, 2022

## Description

In strongSwan before 5.9.5, a malicious responder can send an EAP-Successmessage too early without actually authenticating the client and (in thecase of EAP methods with mutual authentication and EAP-only authenticationfor IKEv2) even without server authentication.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | charon-cmd Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [charon-cmd 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-charon-cmd-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | charon-cmd Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [charon-cmd 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-charon-cmd-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | charon-cmd Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [charon-cmd 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-charon-cmd-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | charon-cmd Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [charon-cmd 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-charon-cmd-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | charon-cmd Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [charon-cmd 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-charon-cmd-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | charon-systemd Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [charon-systemd 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-charon-systemd-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | charon-systemd Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [charon-systemd 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-charon-systemd-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | charon-systemd Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [charon-systemd 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-charon-systemd-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | charon-systemd Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [charon-systemd 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-charon-systemd-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | charon-systemd Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [charon-systemd 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-charon-systemd-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libcharon-extauth-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [libcharon-extauth-plugins 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcharon-extauth-plugins-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | libcharon-extauth-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [libcharon-extauth-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcharon-extauth-plugins-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | libcharon-extauth-plugins Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [libcharon-extauth-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcharon-extauth-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libcharon-extauth-plugins Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [libcharon-extauth-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcharon-extauth-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libcharon-extra-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [libcharon-extra-plugins 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcharon-extra-plugins-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | libcharon-extra-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [libcharon-extra-plugins 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcharon-extra-plugins-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | libcharon-extra-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [libcharon-extra-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcharon-extra-plugins-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | libcharon-extra-plugins Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [libcharon-extra-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcharon-extra-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libcharon-extra-plugins Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [libcharon-extra-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcharon-extra-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libcharon-standard-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [libcharon-standard-plugins 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcharon-standard-plugins-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | libcharon-standard-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [libcharon-standard-plugins 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcharon-standard-plugins-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | libstrongswan Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [libstrongswan 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libstrongswan-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | libstrongswan Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [libstrongswan 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libstrongswan-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | libstrongswan Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [libstrongswan 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libstrongswan-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | libstrongswan Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [libstrongswan 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libstrongswan-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libstrongswan Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [libstrongswan 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libstrongswan-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libstrongswan-extra-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [libstrongswan-extra-plugins 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libstrongswan-extra-plugins-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | libstrongswan-extra-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [libstrongswan-extra-plugins 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libstrongswan-extra-plugins-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | libstrongswan-extra-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [libstrongswan-extra-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libstrongswan-extra-plugins-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | libstrongswan-extra-plugins Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [libstrongswan-extra-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libstrongswan-extra-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libstrongswan-extra-plugins Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [libstrongswan-extra-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libstrongswan-extra-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libstrongswan-standard-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [libstrongswan-standard-plugins 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libstrongswan-standard-plugins-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | libstrongswan-standard-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [libstrongswan-standard-plugins 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libstrongswan-standard-plugins-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | libstrongswan-standard-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [libstrongswan-standard-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libstrongswan-standard-plugins-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | libstrongswan-standard-plugins Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [libstrongswan-standard-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libstrongswan-standard-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libstrongswan-standard-plugins Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [libstrongswan-standard-plugins 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libstrongswan-standard-plugins-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan Debian 11.6 (bullseye) | 5.9.1-1+deb11u2 | [DSA-5056-1](https://patchblox.com/security/data/fix/linux/dsa-5056-1.md) | Jan 24, 2022 |
| Linux | strongswan Debian 12.15 (bookworm) | 5.9.5-1 | [DEBIAN-CVE-2021-45079](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45079.md) | Jan 31, 2022 |
| Linux | strongswan Debian 13.5 (trixie) | 5.9.5-1 | [DEBIAN-CVE-2021-45079](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45079.md) | Jan 31, 2022 |
| Linux | strongswan Debian 14 | 5.9.5-1 | [DEBIAN-CVE-2021-45079](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45079.md) | Jan 31, 2022 |
| Linux | strongswan Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-charon Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-charon 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-charon-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-charon Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-charon 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-charon-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-charon Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-charon 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-charon-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-charon Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan-charon 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-charon-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-charon Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan-charon 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-charon-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-libcharon Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-libcharon 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-libcharon-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-libcharon Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-libcharon 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-libcharon-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-libcharon Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-libcharon 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-libcharon-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-libcharon Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan-libcharon 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-libcharon-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-libcharon Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan-libcharon 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-libcharon-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-nm Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-nm 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-nm-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-nm Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-nm 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-nm-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-nm Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-nm 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-nm-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-nm Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan-nm 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-nm-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-nm Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan-nm 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-nm-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-pki Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-pki 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-pki-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-pki Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-pki 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-pki-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-pki Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-pki 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-pki-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-pki Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan-pki 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-pki-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-pki Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan-pki 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-pki-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-scepclient Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-scepclient 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-scepclient-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-scepclient Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-scepclient 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-scepclient-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-scepclient Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-scepclient 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-scepclient-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-starter Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-starter 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-starter-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-starter Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-starter 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-starter-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-starter Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-starter 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-starter-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-starter Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan-starter 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-starter-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-starter Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan-starter 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-starter-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-swanctl Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-swanctl 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-swanctl-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-swanctl Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-swanctl 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-swanctl-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-swanctl Ubuntu 22.04.1 LTS (jammy) | 5.9.4-1ubuntu4 | [strongswan-swanctl 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-swanctl-5.9.4-1ubuntu4.md) | Jan 24, 2022 |
| Linux | strongswan-swanctl Ubuntu 24.10 (oracular) | 5.9.4-1ubuntu4 | [strongswan-swanctl 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-swanctl-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-swanctl Ubuntu 25.04 (plucky) | 5.9.4-1ubuntu4 | [strongswan-swanctl 5.9.4-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-swanctl-5.9.4-1ubuntu4.md) | Jan 16, 2026 |
| Linux | strongswan-tnc-base Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-tnc-base 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-base-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-base Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-tnc-base 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-base-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-client Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-tnc-client 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-client-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-client Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-tnc-client 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-client-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-ifmap Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-tnc-ifmap 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-ifmap-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-ifmap Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-tnc-ifmap 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-ifmap-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-pdp Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-tnc-pdp 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-pdp-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-pdp Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-tnc-pdp 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-pdp-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-server Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.8 | [strongswan-tnc-server 5.6.2-1ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-server-5.6.2-1ubuntu2.8.md) | Jan 24, 2022 |
| Linux | strongswan-tnc-server Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.4 | [strongswan-tnc-server 5.8.2-1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-server-5.8.2-1ubuntu3.4.md) | Jan 24, 2022 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

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