RHEL 10 : thunderbird (RHSA-2026:19153)

critical Nessus Plugin ID 315403

Synopsis

The remote Red Hat host is missing one or more security updates for thunderbird.

Description

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:19153 advisory.

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

* firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.10.1 and Firefox 150.0.1 (CVE-2026-7323)

* firefox: thunderbird: Information disclosure due to incorrect boundary conditions in the Audio/Video component (CVE-2026-7320)

* firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1 (CVE-2026-7322)

* firefox: thunderbird: webrtc: Sandbox escape due to incorrect boundary conditions in the WebRTC:
Networking component (CVE-2026-7321)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 RHEL thunderbird package based on the guidance in RHSA-2026:19153.

Plugin Details

Severity: Critical

ID: 315403

File Name: redhat-RHSA-2026-19153.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/19/2026

Updated: 5/19/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

Vendor

Vendor Severity: Important

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-2026-7322

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.3

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

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

CVSS Score Source: CVE-2026-7321

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:thunderbird, cpe:/o:redhat:enterprise_linux:10.2

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 5/19/2026

Vulnerability Publication Date: 4/21/2026

Reference Information

CVE: CVE-2026-7320, CVE-2026-7321, CVE-2026-7322, CVE-2026-7323

CWE: 125, 501, 787

RHSA: 2026:19153

Detections

Analytics