CVE-2026-80521

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

September 24, 2026

Last Seen

September 24, 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

Critical Linux Kernel Flaw Allows Container Escape via CVE-2026-8052164.5

A use-after-free vulnerability in the Linux kernel's AF_UNIX socket subsystem, tracked as CVE-2026-80521, enables attackers to escape containers and gain root access on the host system. Discovered by DepthFirst using their AI model dfs-large1, the flaw affects Ubuntu 26.04, 24.04, and 22.04 LTS rele...