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TI-2021-14256 Aliases CVE-2021-35525GHSA-w799-rf9r-4rqc

PostSRSd before 1.11 allows a denial of service (subprocess hang) if Postfix sends…

Priority LOW 27Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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."

Why it matters now

EPSS 0.01654 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:postsrsd_project:postsrsd:*:*:*:*:*:*:*:*before 1.11VulnerablePostsrsd Project
  • cpe:2.3:a:postsrsd_project:postsrsd:*:*:*:*:*:*:*:* Versions before 1.11 Vulnerable ·Postsrsd Project

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-35525
  2. 2026-10-03 Alias added: GHSA-w799-rf9r-4rqc

References

Patch 2

Advisory 2

  • TI-2020-18080 srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences