CVE-2026-2797 - Vulnerability Analysis

Overview

Firefox < 148 contains a use-after-free vulnerability caused by improper memory management in the JavaScript GC component, letting attackers cause memory corruption or remote code execution, exploit requires crafted web content.

Severity & Score

Impact

Attackers can cause memory corruption or execute arbitrary code remotely via crafted web content.

Mitigation

Update to Firefox version 148 or later.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2013561
• https://www.mozilla.org/security/advisories/mfsa2026-13/
• https://www.mozilla.org/security/advisories/mfsa2026-16/

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Feb 26, 2026

🔴 CVE-2026-2797 - Critical (9.8) Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148 and Thunderbird < 148. 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-2797/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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• Vulnerability Intelligence Dashboard
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