Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
CVE-2026-117942
NONE
EPSS 0.19%
Updated Oct 27, 2026
Firefox
https://bugzilla.mozilla.org/show_bug.cgi?id=2082047
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-118/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-119/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-120/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-121/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-122/
security@mozilla.org
CVE Details
CVE ID
CVE-2026-117942
Published Date
Oct 27, 2026
Vendor
Firefox
Severity
NONE
Exploit Prediction (EPSS)
Probability of Exploit
0.19%
Likelihood of exploitation in next 30 days
Percentile:
8.2th percentile (higher than 8.2% of all CVEs)
Standard patching cycle
Impact
Minimal impact
Source
View Advisory