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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : QT WebEngine vulnerability (USN-8347-1)

high Nessus Plugin ID 318087

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8347-1 advisory.

 It was discovered that the vendored LibTIFF in QT WebEngine incorrectly handled memory when parsing malformed TIFF image metadata. An attacker could possibly use this issue to cause a denial of service, obtain sensitive information, or execute arbitrary code.

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

Note that Nessus has not tested for this issue 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-8347-1

Plugin Details

Severity: High

ID: 318087

File Name: ubuntu_USN-8347-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/1/2026

Updated: 6/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2025-9900

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

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:qtwebengine5-examples, p-cpe:/a:canonical:ubuntu_linux:libqt5webenginewidgets5, p-cpe:/a:canonical:ubuntu_linux:libqt5webenginecore5, p-cpe:/a:canonical:ubuntu_linux:libqt5pdf5, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libqt5pdfwidgets5, p-cpe:/a:canonical:ubuntu_linux:qtwebengine5-private-dev, p-cpe:/a:canonical:ubuntu_linux:libqt5webengine5, p-cpe:/a:canonical:ubuntu_linux:qt5-image-formats-plugin-pdf, p-cpe:/a:canonical:ubuntu_linux:qml-module-qtquick-pdf, p-cpe:/a:canonical:ubuntu_linux:qtwebengine5-dev-tools, p-cpe:/a:canonical:ubuntu_linux:qtpdf5-examples, p-cpe:/a:canonical:ubuntu_linux:qml-module-qtwebengine, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qtpdf5-dev, p-cpe:/a:canonical:ubuntu_linux:libqt5webengine-data, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qtwebengine5-dev

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/28/2026

Vulnerability Publication Date: 9/23/2025

Reference Information

CVE: CVE-2025-9900

USN: 8347-1