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FreeBSD : Mozilla -- Multiple vulnerabilities (15f4e0f6-1338-11f1-a55d-b42e991fc52e)

medium Nessus Plugin ID 300552

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 15f4e0f6-1338-11f1-a55d-b42e991fc52e advisory.

 CVE-2026-2809: Memory safety bug in the JavaScript: WebAssembly component.
 CVE-2026-2808: Integer overflow in the JavaScript: Standard Library component.

Tenable has extracted the preceding description block directly from the FreeBSD 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

http://www.nessus.org/u?821b5ce6

Plugin Details

Severity: Medium

ID: 300552

File Name: freebsd_pkg_15f4e0f6133811f1a55db42e991fc52e.nasl

Version: 1.3

Type: local

Published: 3/4/2026

Updated: 3/19/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

CVSS Score Source: CVE-2026-2808

CVSS v4

Risk Factor: Medium

Base Score: 6.7

Threat Score: 4

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-2809

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:firefox-esr, p-cpe:/a:freebsd:freebsd:thunderbird, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:firefox

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 2/26/2026

Vulnerability Publication Date: 2/26/2026

Reference Information

CVE: CVE-2026-2808, CVE-2026-2809