CVE-2025-26794 SQL injection in Exim

What is CVE-2025-26794?

CVE-2025-26794 is a high-severity SQL injection vulnerability in Exim Exim, published on 21 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Exim 4.98 before 4.98.1, when SQLite hints and ETRN serialization are used, allows remote SQL injection. (Resolving SQL injection requires an update to 4.99.1 in certain non-default rate-limit configurations.)

Weakness: CWE-89

Which versions are affected by CVE-2025-26794?

It affects 1 product.

Products include Exim Exim.

How do I fix CVE-2025-26794?

Upgrade to a fixed version.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2025-26794 being exploited?

There is no known exploitation of CVE-2025-26794 in the wild and no public exploit code.

Public exploit code: 3 proofs of concept on GitHub.

Other vulnerabilities in Exim Exim

• CVE-2026-45185 Use after free in Exim Critical 9.8
• CVE-2023-42115 Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability Critical 9.8
• CVE-2020-28017 Integer overflow in n/a Critical 9.8
• CVE-2020-28018 Use after free in n/a Critical 9.8
• CVE-2020-28020 Integer overflow in n/a Critical 9.8

All Exim Exim vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-26794, GHSA-v8m7-99rg-xp5c.