CVE-2021-38371

HIGH 7.5CVE-2021-38371 · Published 10/08/2021 · updated 17/06/2026

In short

CVE-2021-38371 is a HIGH (CVSS 7.5) vulnerability affecting exim (exim).
Chance of exploitation in the next 30 days (EPSS): 2.0%, higher than 80.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
exim exim	`≤ 4.94.2`	No fix yet

The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.