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AlmaLinux 9.2 [TuxCare] Security Update: thunderbird Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1787115646)

critical Nessus Plugin ID 360063

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Synopsis

The AlmaLinux host is missing one or more security updates.

Description

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1787115646 advisory.

 - In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations. (CVE-2022-43680)

 - A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage. (CVE-2024-8176)

 - Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 143 and Thunderbird 143. (CVE-2025-10530)

 - Mitigation bypass in the Web Compatibility: Tooling component. This vulnerability was fixed in Firefox 143 and Thunderbird 143. (CVE-2025-10531)

 - Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. *This bug only affects Thunderbird for macOS. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10. (CVE-2025-4082)

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 thunderbird package based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2026:1787115646.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1787115646

http://www.nessus.org/u?68f4dc3d

Plugin Details

Severity: Critical

ID: 360063

File Name: tuxcare_alma_linux_9.2_CLSA-2026-1787115646.nasl

Version: 1.3

Type: Local

Published: 10/1/2026

Updated: 11/3/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

Percentile: 99.88

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

CVSS Score Source: CVE-2026-111497

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 9.2

Threat Vector: CVSS:4.0/E:A

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/OS/extended-third-party

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/19/2026

Vulnerability Publication Date: 4/29/2025

CISA Known Exploited Vulnerability Due Dates: 11/10/2026

Reference Information

CVE: CVE-2022-43680, CVE-2024-8176, CVE-2025-10530, CVE-2025-10531, CVE-2025-4082, CVE-2025-4086, CVE-2025-4089, CVE-2025-4092, CVE-2025-5272, CVE-2025-8043, CVE-2025-8044, CVE-2026-0881, CVE-2026-0892, CVE-2026-111497, CVE-2026-12300, CVE-2026-12301, CVE-2026-12316, CVE-2026-12326, CVE-2026-16364, CVE-2026-16365, CVE-2026-16366, CVE-2026-16370, CVE-2026-16372, CVE-2026-16376, CVE-2026-16378, CVE-2026-16380, CVE-2026-16382, CVE-2026-16384, CVE-2026-16385, CVE-2026-16386, CVE-2026-16388, CVE-2026-16389, CVE-2026-16399, CVE-2026-16400, CVE-2026-16401, CVE-2026-16402, CVE-2026-16403, CVE-2026-16407, CVE-2026-16408, CVE-2026-16409, CVE-2026-16410, CVE-2026-2798, CVE-2026-2801, CVE-2026-2802, CVE-2026-2804, CVE-2026-45186, CVE-2026-4726, CVE-2026-4728, CVE-2026-56209, CVE-2026-56210, CVE-2026-56211, CVE-2026-6755, CVE-2026-6758, CVE-2026-6760, CVE-2026-6768, CVE-2026-6783

CLSA: 2026:1787115646