CVE-2025-13016 — Improper Check or Handling of Exceptional Conditions in Mozilla Firefox

CWE-703 — Improper Check or Handling of Exceptional ConditionsCWE-787 — Out-of-bounds Write11 documents8 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 85.49%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla ThunderbirdMozilla Firefox
Timeline
PublishedNov 11
Latest updateFeb 2

Description

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.6 | Impact: 5.9

Affected Packages2 packages

▶NVDmozilla/firefox< 140.5.0+1
▶Debianmozilla/thunderbird< 1:140.5.0esr-1~deb11u1+3

🔴Vulnerability Details

3
OSV
CVE-2025-13016: Incorrect boundary conditions in the JavaScript: WebAssembly component↗2025-11-11
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GHSA
GHSA-pvxc-5v6m-8cm2: Incorrect boundary conditions in the JavaScript: WebAssembly component↗2025-11-11
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CVEList
Incorrect boundary conditions in the JavaScript: WebAssembly component↗2025-11-11
▶

📋Vendor Advisories

7
Ubuntu
Thunderbird vulnerabilities↗2026-02-02
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Red Hat
firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component↗2025-11-11
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Debian
CVE-2025-13016: firefox - Incorrect boundary conditions in the JavaScript: WebAssembly component. This vul...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-91: CVE-2025-13016↗
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Mozilla
Mozilla Foundation Security Advisory 2025-90: CVE-2025-13016↗
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CVE-2025-13016 — Mozilla Firefox vulnerability | cvebase