CVE-2021-35525

5.3 mediumEPSS 1.7%

Medium (5.3) in postsrsd project postsrsd. EPSS 1.7% chance of exploitation in the next 30 days.

PostSRSd before 1.11 allows a denial of service (subprocess hang) if Postfix sends certain long data fields such as multiple concatenated email addresses. NOTE: the PostSRSd maintainer acknowledges "theoretically, this error should never occur ... I'm not sure if there's a reliable way to trigger this condition by an external attacker, but it is a security bug in PostSRSd nevertheless."

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
Published: 2021-06-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

postsrsd_project:postsrsd

References

https://bugs.gentoo.org/793674
https://github.com/roehling/postsrsd/commit/077be98d8c8a9847e4ae0c7dc09e7474cbe27db2
https://github.com/roehling/postsrsd/releases/tag/1.11
https://security.gentoo.org/glsa/202107-08
https://bugs.gentoo.org/793674

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