CVE-2026-43964

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

May 7, 2026

Last Seen

June 2, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Fedora Postfix Buffer Over-Read Vulnerability Advisory57.9

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 inclu...

Postfix Denial of Service Vulnerability in Ubuntu Releases45.9

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 to crash Postfix by sending specially crafted network traffic. The vulnerability...