Mozilla Thunderbird < 128.13

critical Nessus Plugin ID 242580

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Synopsis

A mail client installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Thunderbird installed on the remote Windows host is prior to 128.13. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-62 advisory.

- Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
(CVE-2025-8035)

- The <code>username:password</code> part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. (CVE-2025-8031)

- On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack.
Baseline-JIT, however, read the entire 64 bits. (CVE-2025-8027)

- On arm64, a WASM <code>brtable</code> instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address.
(CVE-2025-8028)

- Thunderbird executed <code>javascript:</code> URLs when used in <code>object</code> and <code>embed</code> tags. (CVE-2025-8029)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Mozilla Thunderbird version 128.13 or later.

Plugin Details

Severity: Critical

ID: 242580

File Name: mozilla_thunderbird_128_13.nasl

Version: 1.3

Type: local

Agent: windows

Family: Windows

Published: 7/22/2025

Updated: 7/30/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, 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-2025-8034

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

CVSS Score Source: CVE-2025-8031

Vulnerability Information

CPE: cpe:/a:mozilla:thunderbird

Required KB Items: Mozilla/Thunderbird/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2025

Vulnerability Publication Date: 7/22/2025

Reference Information

CVE: CVE-2025-8027, CVE-2025-8028, CVE-2025-8029, CVE-2025-8030, CVE-2025-8031, CVE-2025-8032, CVE-2025-8033, CVE-2025-8034, CVE-2025-8035

IAVA: 2025-A-0545

Detections

Analytics