# CVE-2023-26463: strongswan: strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two...

CVE-2023-26463 is fixed in strongswan on 1 platform, first by DEBIAN-CVE-2023-26463, released April 15, 2023. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2023-26463
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0226
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 15, 2023

## Description

strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes within the same function. There is initially incorrect access control, later followed by an expired pointer dereference. One attack vector is sending an untrusted client certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | strongswan Debian 12.15 (bookworm) | 5.9.8-4 | [DEBIAN-CVE-2023-26463](https://patchblox.com/security/data/fix/linux/debian-cve-2023-26463.md) | Apr 15, 2023 |
| Linux | strongswan Debian 13.5 (trixie) | 5.9.8-4 | [DEBIAN-CVE-2023-26463](https://patchblox.com/security/data/fix/linux/debian-cve-2023-26463.md) | Apr 15, 2023 |
| Linux | strongswan Debian 14 | 5.9.8-4 | [DEBIAN-CVE-2023-26463](https://patchblox.com/security/data/fix/linux/debian-cve-2023-26463.md) | Apr 15, 2023 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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