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TencentOS Server 3: firefox (TSSA-2026:1336)

high Nessus Plugin ID 375724

Synopsis

The remote TencentOS Server 3 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:1336 advisory.

 Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

 CVE-2026-45186:
 A flaw was found in libexpat. When processing a specially crafted XML input containing a specific pattern of attributes, the parsing time increases quadratically due to checks for attribute name collisions. This consumes excessive CPU resources and eventually results in a denial of service.

 CVE-2026-109704:
 A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
 Privilege escalation in the Application Update component

 CVE-2026-109705:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component

 CVE-2026-109706:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the Storage: IndexedDB component

 CVE-2026-109707:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Sandbox escape due to use-after-free in the Networking component

 CVE-2026-109708:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Sandbox escape due to incorrect boundary conditions in the Networking component

 CVE-2026-109709:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Information disclosure, privilege escalation in the Security: Process Sandboxing component

 CVE-2026-109711:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the Graphics: Canvas2D component

 CVE-2026-109712:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Sandbox escape due to uninitialized memory in the Graphics component

 CVE-2026-109713:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the Crash Reporting component

 CVE-2026-109715:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Incorrect boundary conditions in the JavaScript Engine component

 CVE-2026-109716:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Incorrect boundary conditions in the JavaScript Engine component

 CVE-2026-109717:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the DOM: Bindings (WebIDL) component

 CVE-2026-109718:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the XML component

 CVE-2026-109719:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Race condition, use-after-free in the Graphics: CanvasWebGL component

 CVE-2026-109720:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 JIT miscompilation in the JavaScript: WebAssembly component

 CVE-2026-109721:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Incorrect boundary conditions in the JavaScript Engine: JIT component

 CVE-2026-109722:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 JIT miscompilation in the JavaScript Engine: JIT component

 CVE-2026-109723:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Integer overflow in the Layout: Text and Fonts component

 CVE-2026-109724:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the DOM: Core & HTML component

 CVE-2026-109725:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the DOM: Core & HTML component

 CVE-2026-109726:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the SVG component

 CVE-2026-109727:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the Audio/Video component

 CVE-2026-109728:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the DOM: Animation component

 CVE-2026-109729:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the JavaScript Engine: JIT component

 CVE-2026-109730:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Integer overflow in the Graphics component

 CVE-2026-109732:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the DOM: Streams component

 CVE-2026-109733:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 JIT miscompilation in the JavaScript Engine: JIT component

 CVE-2026-109736:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Frame poisoning in the Layout component

 CVE-2026-109737:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Mitigation bypass in the Enterprise Policies component

 CVE-2026-109738:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the Audio/Video: Playback component

 CVE-2026-109740:
 A flaw was found in Firefox. Incorrect boundary condition handling in the Win32 widget component allows an attacker to escape the browser's restricted sandbox environment. An attacker who has compromised a sandboxed content process could exploit this vulnerability to achieve privilege escalation and execute arbitrary code on the underlying operating system.

 CVE-2026-109741:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the Storage: Bucket File System component

 CVE-2026-109742:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Information disclosure in the PDF Viewer component

 CVE-2026-109743:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Privilege escalation in the Panning and Zooming component

 CVE-2026-109744:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Other issue in the DOM: File component

 CVE-2026-109745:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Sandbox escape due to uninitialized memory in the DOM: Web Serial component

 CVE-2026-109751:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Information disclosure in the Networking component

 CVE-2026-109752:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Use-after-free in the DOM: Workers component

 CVE-2026-109753:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Incorrect boundary conditions in the Layout component

 CVE-2026-109782:
 A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
 Mitigation bypass in the File Handling component

Tenable has extracted the preceding description block directly from the Tencent Linux 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://mirrors.tencent.com/tlinux/errata/tssa-20261336.xml

Plugin Details

Severity: High

ID: 375724

File Name: tencentos_TSSA_2026_1336.nasl

Version: 1.1

Type: Local

Published: 11/4/2026

Updated: 11/4/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.11

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-45186

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:3, p-cpe:/a:tencent:tencentos_server:firefox

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/etc/os-release, Host/TencentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/26/2026

Vulnerability Publication Date: 5/10/2026

Reference Information

CVE: CVE-2026-109704, CVE-2026-109705, CVE-2026-109706, CVE-2026-109707, CVE-2026-109708, CVE-2026-109709, CVE-2026-109711, CVE-2026-109712, CVE-2026-109713, CVE-2026-109715, CVE-2026-109716, CVE-2026-109717, CVE-2026-109718, CVE-2026-109719, CVE-2026-109720, CVE-2026-109721, CVE-2026-109722, CVE-2026-109723, CVE-2026-109724, CVE-2026-109725, CVE-2026-109726, CVE-2026-109727, CVE-2026-109728, CVE-2026-109729, CVE-2026-109730, CVE-2026-109732, CVE-2026-109733, CVE-2026-109736, CVE-2026-109737, CVE-2026-109738, CVE-2026-109740, CVE-2026-109741, CVE-2026-109742, CVE-2026-109743, CVE-2026-109744, CVE-2026-109745, CVE-2026-109751, CVE-2026-109752, CVE-2026-109753, CVE-2026-109782, CVE-2026-45186

IAVA: 2026-A-1136-S