Debian dla-4694 : libnss3 - security update

high Nessus Plugin ID 328944

Synopsis

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

Description

The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4694 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4694-1 [email protected] https://www.debian.org/lts/security/ Jochen Sprickerhof July 22, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : nss Version : 2:3.61-1+deb11u6 2:3.87.1-1+deb12u3 CVE ID : CVE-2026-6766 CVE-2026-6767 CVE-2026-6772 CVE-2026-12318 Debian Bug :

Several vulnerabilities were discovered in NSS, a set of cryptographic libraries, which may result in or denial of service or potentially the execution of arbitrary code.

For Debian 11 bullseye, these problems have been fixed in version 2:3.61-1+deb11u6.

For Debian 12 bookworm, these problems have been fixed in version 2:3.87.1-1+deb12u3.

We recommend that you upgrade your nss packages.

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

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 Attachment:
signature.asc Description: PGP signature

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 libnss3 packages.

Plugin Details

Severity: High

ID: 328944

File Name: debian_DLA-4694.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 7/22/2026

Updated: 7/22/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-6772

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:libnss3-dev, p-cpe:/a:debian:debian_linux:libnss3-tools, p-cpe:/a:debian:debian_linux:libnss3

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 4/21/2026

Reference Information

CVE: CVE-2026-12318, CVE-2026-6766, CVE-2026-6767, CVE-2026-6772

Detections

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