CVE-2026-117999

HIGH 8.8CVE-2026-117999 · Published 27/10/2026 · updated 05/11/2026

In short

CVE-2026-117999 is a HIGH (CVSS 8.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.30%, higher than 23.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Race condition in the IPC component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

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