========================================================================== Ubuntu Security Notice USN-8590-1 July 22, 2026
exim4 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Exim. Software Description: - exim4: Exim is a mail transport agent Details: It was discovered that Exim incorrectly handled certain command line options. A local attacker could possibly use this issue to access files outside of the spool area. It was discovered that Exim incorrectly handled string expansion in .local files. A local attacker could possibly use this issue to escalate privileges. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS exim4 4.99.1-1ubuntu1.4 Ubuntu 24.04 LTS exim4 4.97-4ubuntu4.7 Ubuntu 22.04 LTS exim4 4.95-4ubuntu2.11 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8590-1 https://launchpad.net/bugs/2161106 Package Information: https://launchpad.net/ubuntu/+source/exim4/4.99.1-1ubuntu1.4 https://launchpad.net/ubuntu/+source/exim4/4.97-4ubuntu4.7 https://launchpad.net/ubuntu/+source/exim4/4.95-4ubuntu2.11
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