CVE-2026-43964 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
3
occurrences
First Seen
May 7, 2026
Last Seen
June 2, 2026

CVE-2026-43964 is a vulnerability tracked across 2 threat clusters and 3 intelligence report mentions on ThreatCluster. First observed May 7, 2026; most recent activity June 2, 2026.

Related Threat Clusters

  • Fedora Postfix Buffer Over-Read Vulnerability Advisory

    On May 18, 2026, an update was released for Fedora versions addressing a critical buffer over-read vulnerability identified as CVE-2026-43964. This vulnerability allows for a buffer over-read via a malformed enhanced…

    2 articles · Updated June 2, 2026
  • Postfix Denial of Service Vulnerability in Ubuntu Releases

    A denial of service vulnerability has been identified in Postfix, affecting multiple Ubuntu releases including 26.04 LTS, 25.10, 24.04 LTS, and 22.04 LTS. Discovered by Kamil Frankowicz, the flaw allows remote attackers…

    2 articles · Updated May 7, 2026

Recent Intelligence Reports

  • Fedora 43 Postfix Critical Buffer Over-read Fix Advisory 2026 — Linuxsecurity · June 2, 2026
  • Fedora 44 Postfix Important Buffer Over-Read CVE-2026 — Linuxsecurity · June 2, 2026
  • Ubuntu 26.04 LTS Postfix Key Denial of Service Vulnerability USN-8253 — Linuxsecurity · May 7, 2026

Related Entities

Denial of Service Fedora Ubuntu Cwe-125 - Out-of-bounds Read Postfix

CVSS v3.1 Breakdown