# exim4-base security updates Patch Radar has 51 security fixes for exim4-base, closing 46 CVEs, 1 of which is being exploited. The newest is exim4-base 4.97-4ubuntu4.8 (4.97-4ubuntu4.8), released September 29, 2026. - Web page: https://patchblox.com/security/product/linux/exim4-base - Platform: Linux - Supported: yes ## Security fixes, newest first | Fix | Released | Fixed in | Priority | CVEs | Exploited | |---|---|---|---|---:|---:| | [exim4-base 4.97-4ubuntu4.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.8.md) | Sep 29, 2026 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.8 | High | 3 | 0 | | [exim4-base 4.95-4ubuntu2.12](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.12.md) | Sep 29, 2026 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.12 | High | 3 | 0 | | [exim4-base 4.99.1-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-exim4-base-4.99.1-1ubuntu1.5.md) | Sep 19, 2026 | Ubuntu 26.04.1 LTS (resolute) 4.99.1-1ubuntu1.5 | High | 4 | 0 | | [exim4-base 4.95-4ubuntu2.11](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.11.md) | Jul 31, 2026 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.11 | High | 2 | 0 | | [exim4-base 4.97-4ubuntu4.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.7.md) | Jul 31, 2026 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.7 | High | 2 | 0 | | [exim4-base 4.99.1-1ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-exim4-base-4.99.1-1ubuntu1.4.md) | Jul 23, 2026 | Ubuntu 26.04.1 LTS (resolute) 4.99.1-1ubuntu1.4 | High | 2 | 0 | | [exim4-base 4.98.2-1ubuntu2.3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-exim4-base-4.98.2-1ubuntu2.3.md) | Jun 24, 2026 | Ubuntu 25.10 (questing) 4.98.2-1ubuntu2.3 | Routine | 1 | 0 | | [exim4-base 4.97-4ubuntu4.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.6.md) | Jun 24, 2026 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.6 | Routine | 1 | 0 | | [exim4-base 4.95-4ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.9.md) | Jun 24, 2026 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.9 | Routine | 1 | 0 | | [exim4-base 4.93-13ubuntu1.12+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.12-esm1.md) | Jun 24, 2026 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.12+esm1 | Urgent | 5 | 0 | | [exim4-base 4.90.1-1ubuntu1.10+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm6.md) | Jun 24, 2026 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10+esm6 | Routine | 1 | 0 | | [exim4-base 4.99.1-1ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-exim4-base-4.99.1-1ubuntu1.3.md) | May 29, 2026 | Ubuntu 26.04.1 LTS (resolute) 4.99.1-1ubuntu1.3 | Routine | 1 | 0 | | [exim4-base 4.98.2-1ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-exim4-base-4.98.2-1ubuntu2.2.md) | May 27, 2026 | Ubuntu 25.10 (questing) 4.98.2-1ubuntu2.2 | Urgent | 1 | 0 | | [exim4-base 4.95-4ubuntu2.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.8.md) | May 27, 2026 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.8 | Urgent | 1 | 0 | | [exim4-base 4.97-4ubuntu4.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.5.md) | May 27, 2026 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.5 | Urgent | 1 | 0 | | [exim4-base 4.98.2-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-exim4-base-4.98.2-1ubuntu2.1.md) | May 15, 2026 | Ubuntu 25.10 (questing) 4.98.2-1ubuntu2.1 | Urgent | 3 | 0 | | [exim4-base 4.97-4ubuntu4.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.4.md) | May 15, 2026 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.4 | Urgent | 3 | 0 | | [exim4-base 4.95-4ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.7.md) | May 15, 2026 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.7 | Urgent | 3 | 0 | | [exim4-base 4.99.1-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-exim4-base-4.99.1-1ubuntu1.2.md) | May 12, 2026 | Ubuntu 26.04.1 LTS (resolute) 4.99.1-1ubuntu1.2 | Urgent | 1 | 0 | | [exim4-base 4.99.1-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-exim4-base-4.99.1-1ubuntu1.1.md) | Apr 29, 2026 | Ubuntu 26.04.1 LTS (resolute) 4.99.1-1ubuntu1.1 | Urgent | 3 | 0 | | [exim4-base 4.98-1ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-exim4-base-4.98-1ubuntu2.1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 4.98-1ubuntu2.1 | High | 1 | 0 | | [exim4-base 4.97-3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-exim4-base-4.97-3.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 4.97-3 | Routine | 1 | 0 | | [exim4-base 4.97-3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-exim4-base-4.97-3.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 4.97-3 | Routine | 1 | 0 | | [exim4-base 4.97-4ubuntu4.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.3.md) | Mar 26, 2025 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.3 | High | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.10+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm5.md) | Jul 4, 2024 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10+esm5 | Routine | 1 | 0 | | [exim4-base 4.93-13ubuntu1.12](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.12.md) | Jul 4, 2024 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.12 | Routine | 1 | 0 | | [exim4-base 4.95-4ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.6.md) | Jul 4, 2024 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.6 | Routine | 1 | 0 | | [exim4-base 4.97-4ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-exim4-base-4.97-4ubuntu4.1.md) | Jul 4, 2024 | Ubuntu 24.04.5 LTS (noble) 4.97-4ubuntu4.1 | Routine | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.10+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm3.md) | Dec 23, 2023 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10+esm3 | Routine | 1 | 0 | | [exim4-base 4.93-13ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.10.md) | Dec 23, 2023 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.10 | Routine | 1 | 0 | | [exim4-base 4.95-4ubuntu2.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.5.md) | Dec 23, 2023 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.5 | Routine | 1 | 0 | | [exim4-base 4.93-13ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.8.md) | Sep 27, 2023 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.8 | Urgent | 3 | 0 | | [exim4-base 4.95-4ubuntu2.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.3.md) | Sep 27, 2023 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.3 | Urgent | 3 | 0 | | [exim4-base 4.90.1-1ubuntu1.10+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm1.md) | Sep 27, 2023 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10+esm1 | Urgent | 2 | 0 | | [exim4-base 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10+esm2 | High | 2 | 0 | | [exim4-base 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.9.md) | Sep 27, 2023 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.9 | High | 2 | 0 | | [exim4-base 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.4.md) | Sep 27, 2023 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.4 | High | 2 | 0 | | [exim4-base 4.90.1-1ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10.md) | Oct 17, 2022 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10 | High | 1 | 0 | | [exim4-base 4.93-13ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.7.md) | Oct 17, 2022 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.7 | High | 1 | 0 | | [exim4-base 4.95-4ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.2.md) | Oct 17, 2022 | Ubuntu 22.04.1 LTS (jammy) 4.95-4ubuntu2.2 | High | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.9.md) | Aug 7, 2022 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.9 | Urgent | 1 | 0 | | [exim4-base 4.93-13ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.6.md) | Aug 7, 2022 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.6 | Urgent | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.10+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm4.md) | Aug 10, 2021 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.10+esm4 | Routine | 1 | 0 | | [exim4-base 4.93-13ubuntu1.11](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.11.md) | Aug 10, 2021 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.11 | Routine | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.8.md) | May 4, 2021 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.8 | Routine | 20 | 0 | | [exim4-base 4.93-13ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.5.md) | May 4, 2021 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.5 | Routine | 19 | 0 | | [exim4-base 4.90.1-1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.5.md) | May 11, 2020 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.5 | Routine | 1 | 0 | | [exim4-base 4.93-13ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.1.md) | May 11, 2020 | Ubuntu 20.04 LTS (focal) 4.93-13ubuntu1.1 | Routine | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.4.md) | Sep 6, 2019 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.4 | High | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.3.md) | Jul 25, 2019 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.3 | Routine | 1 | 0 | | [exim4-base 4.90.1-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.2.md) | Jun 3, 2019 | Ubuntu 18.04.6 LTS (bionic) 4.90.1-1ubuntu1.2 | Patch now | 1 | 1 | --- Data as of 2026-11-07T06:34:28Z 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