Detections
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Mozilla Thunderbird < 153.0

critical Nessus Plugin ID 329090

Synopsis

A mail client installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.

Description

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 153.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-71 advisory.

 - Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. 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-2026-16360, CVE-2026-16412)

 - Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153. (CVE-2026-16367)

 - The code to parse MIME headers for display when forwarding a message (if the setting to view all headers was enabled) had an off-by-one error, allowing a single byte to be read from the memory after the buffer for the headers, and potentially crashing Thunderbird. (CVE-2026-14899)

 - Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. (CVE-2026-16349)

 - Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. (CVE-2026-16350)

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 153.0 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2026-71/

Plugin Details

Severity: Critical

ID: 329090

File Name: macos_thunderbird_153_0.nasl

Version: 1.1

Type: Local

Agent: macosx

Published: 7/22/2026

Updated: 7/22/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7

Percentile: 98.23

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-2026-16412

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

CVSS Score Source: CVE-2026-16367

Vulnerability Information

CPE: cpe:/a:mozilla:thunderbird

Required KB Items: installed_sw/Mozilla Thunderbird

Exploit Ease: No known exploits are available

Patch Publication Date: 7/21/2026

Vulnerability Publication Date: 7/21/2026

Reference Information

CVE: CVE-2026-14899, CVE-2026-16349, CVE-2026-16350, CVE-2026-16351, CVE-2026-16352, CVE-2026-16353, CVE-2026-16354, CVE-2026-16355, CVE-2026-16356, CVE-2026-16357, CVE-2026-16358, CVE-2026-16359, CVE-2026-16360, CVE-2026-16362, CVE-2026-16363, CVE-2026-16364, CVE-2026-16365, CVE-2026-16366, CVE-2026-16367, CVE-2026-16368, CVE-2026-16369, CVE-2026-16370, CVE-2026-16371, CVE-2026-16372, CVE-2026-16374, CVE-2026-16375, CVE-2026-16376, CVE-2026-16377, CVE-2026-16378, CVE-2026-16379, CVE-2026-16380, CVE-2026-16381, CVE-2026-16382, CVE-2026-16383, CVE-2026-16384, CVE-2026-16385, CVE-2026-16386, CVE-2026-16387, CVE-2026-16388, CVE-2026-16389, CVE-2026-16390, CVE-2026-16391, CVE-2026-16392, CVE-2026-16393, CVE-2026-16394, CVE-2026-16395, CVE-2026-16396, CVE-2026-16398, CVE-2026-16399, CVE-2026-16400, CVE-2026-16401, CVE-2026-16402, CVE-2026-16403, CVE-2026-16405, CVE-2026-16406, CVE-2026-16407, CVE-2026-16408, CVE-2026-16409, CVE-2026-16410, CVE-2026-16411, CVE-2026-16412