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CVE-2026-5735 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: April 7, 2026

Mozilla Firefox - Remote Code Execution

Published: April 7, 2026Updated: April 7, 2026Remote Exploitable

Overview

Mozilla Firefox < 149.0.2 contains memory safety bugs caused by memory corruption, letting attackers potentially execute arbitrary code, exploit requires crafted input to trigger memory corruption.

Severity & Score

Severity: Critical

CVSS Score: 9.8

Impact

Attackers can execute arbitrary code remotely, potentially leading to full system compromise.

Mitigation

Update to version 149.0.2 or later.

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2025475%2C2025477
https://www.mozilla.org/security/advisories/mfsa2026-25/
https://www.mozilla.org/security/advisories/mfsa2026-28/

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-5735
Severity: Critical
CVSS Score: 9.8
Type: undefined
Status: modified

CWE

CWE-787

CVSS Metrics

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