Ubuntu Security Notices USN-8590-1 USN-8590-1: Exim vulnerabilities Publication date 22 July 2026 Overview Several security issues were fixed in Exim. Releases 26.04 LTS 24.04 LTS 22.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages 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. 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 In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 26.04 LTS resolute exim4 – 4.99.1-1ubuntu1.4 24.04 LTS noble exim4 – 4.97-4ubuntu4.7 22.04 LTS jammy exim4 – 4.95-4ubuntu2.11 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References https://launchpad.net/bugs/2161106