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CVE-2026-2796 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: February 25, 2026

Firefox - Undefined Vulnerability

Published: February 24, 2026Updated: February 25, 2026Remote Exploitable

Overview

Firefox < 148 contains a JIT miscompilation vulnerability in the JavaScript: WebAssembly component, letting attackers cause incorrect code execution or behavior, exploit requires crafted WebAssembly code.

Severity & Score

Severity: Critical

CVSS Score: 9.8

Impact

Attackers can cause incorrect code execution or behavior, potentially leading to security bypass or crashes.

Mitigation

Update to Firefox version 148 or later.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2013165
https://www.mozilla.org/security/advisories/mfsa2026-13/
https://www.mozilla.org/security/advisories/mfsa2026-16/

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-2796
Severity: Critical
CVSS Score: 9.8
Type: undefined
Status: confirmed

CWE

CWE-843

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H