Detections
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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : libheif vulnerabilities (USN-8454-1)

medium Nessus Plugin ID 321763

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8454-1 advisory.

 Elhanan Haenel discovered that libheif incorrectly handled certain malformed HEIF sequence files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-32738)

 Elhanan Haenel discovered that libheif incorrectly handled certain malformed HEIF sequence files, leading to an infinite loop. An attacker could possibly use this issue to cause libheif to use excessive resources, resulting in a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS.
 (CVE-2026-32739)

 Elhanan Haenel discovered that libheif incorrectly handled certain crafted HEIF/AVIF image files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-32740)

 It was discovered that libheif incorrectly handled certain crafted HEIF files containing mask images. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-32741)

 It was discovered that libheif incorrectly handled certain crafted grid-based HEIF/AVIF files. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-32814)

 It was discovered that libheif incorrectly handled certain crafted HEIF files when compositing overlay images. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-32882)

 It was discovered that libheif incorrectly handled certain crafted files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS.
 (CVE-2026-3950)

 It was discovered that libheif incorrectly handled certain malformed HEIF sequence files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-41069)

 It was discovered that libheif incorrectly handled certain crafted HEIF sequence files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-41071)

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8454-1

Plugin Details

Severity: Medium

ID: 321763

File Name: ubuntu_USN-8454-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/20/2026

Updated: 6/20/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Low

Base Score: 1.7

Temporal Score: 1.3

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

CVSS Score Source: CVE-2026-3950

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

CVSS Score Source: CVE-2026-41071

CVSS v4

Risk Factor: Medium

Base Score: 5.1

Threat Score: 2

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-41071

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:heif-view, p-cpe:/a:canonical:ubuntu_linux:heif-thumbnailer, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-ffmpegdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugins-all, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-jpegenc, p-cpe:/a:canonical:ubuntu_linux:heif-gdk-pixbuf, p-cpe:/a:canonical:ubuntu_linux:libheif-dev, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-j2kenc, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-x265, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-aomdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-j2kdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-libde265, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-svtenc, p-cpe:/a:canonical:ubuntu_linux:libheif1, p-cpe:/a:canonical:ubuntu_linux:libheif-examples, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-dav1d, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-rav1e, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-jpegdec, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-kvazaar, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-aomenc

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/18/2026

Vulnerability Publication Date: 3/11/2026

Reference Information

CVE: CVE-2026-32738, CVE-2026-32739, CVE-2026-32740, CVE-2026-32741, CVE-2026-32814, CVE-2026-32882, CVE-2026-3950, CVE-2026-41069, CVE-2026-41071

USN: 8454-1