Postfix — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
8
occurrences
First Seen
May 7, 2026
Last Seen
June 19, 2026

Postfix is a technology platform tracked across 4 threat clusters and 8 intelligence report mentions on ThreatCluster. First observed May 7, 2026; most recent activity June 19, 2026.

Related Threat Clusters

  • Critical Vulnerabilities in Rocky Linux Affecting Multiple Components

    Rocky Linux has released multiple security updates addressing critical vulnerabilities across various components, including 389-ds-base, HPLIP, and dracut. The vulnerabilities include a denial-of-service (DoS) issue in…

    618 articles · Updated June 19, 2026
  • 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
  • Postfix Vulnerabilities Addressed in Recent Updates

    On May 7, 2026, two updates for Postfix were released, addressing vulnerabilities in versions 3.6.4 and 3.8.6. The updates include support for various database maps such as CDB, LDAP, LMDB, MySQL, and PCRE. Users of…

    2 articles · Updated May 7, 2026

Recent Intelligence Reports

  • Rocky Linux Postfix Important Buffer Over-read Vuln RLSA-2026 — Linuxsecurity · June 19, 2026
  • Rocky Linux Postfix Major Buffer Over-Read Vulnerability RLSA-2026 — Linuxsecurity · June 19, 2026
  • Fedora 43 Postfix Critical Buffer Over-read Fix Advisory 2026 — Linuxsecurity · June 2, 2026
  • 3.6.4-1ubuntu1.4 — launchpad.net · May 7, 2026
  • 3.8.6-1ubuntu0.1 — launchpad.net · May 7, 2026
  • Postfix — launchpad.net · May 7, 2026
  • Ubuntu 26.04 LTS Postfix Key Denial of Service Vulnerability USN-8253 — Linuxsecurity · May 7, 2026
  • USN-8253-1: Postfix vulnerability — Ubuntu · May 7, 2026

CVSS v3.1 Breakdown