Invalid pointer in the JavaScript Engine: JIT component
CVE-2026-117982

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 27 October 2026

🔔 Create Mozilla Vulnerability Alert

What is CVE-2026-117982?

Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

Affected Version(s)

Firefox 153.6

Firefox 159

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2078855

https://www.mozilla.org/security/advisories/mfsa2026-118/

https://www.mozilla.org/security/advisories/mfsa2026-120/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Oct 27, 2026
Vulnerability Reserved
Oct 27, 2026

Credit

Mozilla

CVE-2026-117982 Data

.