Debian dla-4601 : memcached - security update

high Nessus Plugin ID 316829

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4601 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4601-1 [email protected] https://www.debian.org/lts/security/ Chris Lamb May 26, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : memcached Version : 1.6.9+dfsg-1+deb11u1 CVE IDs : CVE-2026-47783 CVE-2026-47784 Debian Bug : 1137214

It was discovered that there were two side-channel attacks in memcached, the popular in-memory key/value database store. This could have been used to reveal or extract information about authentication details.

For Debian 11 bullseye, these problems have been fixed in version 1.6.9+dfsg-1+deb11u1.

We recommend that you upgrade your memcached packages.

For the detailed security status of memcached please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/memcached

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the memcached packages.

Plugin Details

Severity: High

ID: 316829

File Name: debian_DLA-4601.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 5/26/2026

Updated: 5/26/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-47784

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:memcached

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/26/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-47783, CVE-2026-47784

Detections

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