Linuxsecurity Fedora Postfix Buffer Over-Read Vulnerability Advisory
Article Content
- •CVE-2026-43964 is a critical buffer over-read vulnerability in Postfix.
- •Affected systems include all Fedora versions using Postfix 2:3.10.10-1.
- •Users are urged to apply the patch immediately using the 'dnf' update program.
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 status code, potentially exposing sensitive information. The affected systems include all Fedora distributions using Postfix version 2:3.10.10-1. Users are advised to upgrade their systems using the 'dnf' update program to mitigate the risk. The CVE was published on May 4, 2026, and is categorized as a significant security concern. Administrators should prioritize applying the patch to prevent potential exploitation.
Ask AI about this cluster
Answers cite the sources they use
Timeline
More articles in this cluster (2)
Following this threat?
Track Fedora and CVE-2026-43964 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.
Free account · no card needed
Continue Reading
PHP2Shell Vulnerabilities Exploited by AI-Driven Attackers Threat actors have exploited PHP2Shell vulnerabilities (CVE-2026-109618 and CVE-2026-109619) to target a government entity in Europe, gaining access to sensitive data within two hours of the initial breach. The attackers utilized AI tools for reconnaissance and post-exploitation activities, including accessing…