USN-8792-1: Memcached vulnerability

Publication date

21 September 2026

Overview

Memcached could be made to crash if it received specially crafted network traffic.


Packages

  • memcached - High-performance in-memory object caching system

Details

It was discovered that Memcached incorrectly handled ASCII
authentication. A remote attacker could possibly use this issue to
cause Memcached to crash, resulting in a denial of service.

It was discovered that Memcached incorrectly handled ASCII
authentication. A remote attacker could possibly use this issue to
cause Memcached to crash, resulting in a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute memcached –  1.6.40-1ubuntu0.3
24.04 LTS noble memcached –  1.6.24-1ubuntu0.3
22.04 LTS jammy memcached –  1.6.14-1ubuntu0.3

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