Not analysed yet
We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.
Severity and exploitation
No source has published a CVSS score for this record yet.
- CISA KEV Not listed.
- EPSS 0.27, the 98th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
References from the CNA
- www.mozilla.org/security/advisories/mfsa2019-09/
- www.mozilla.org/security/advisories/mfsa2019-10/
- www.mozilla.org/security/advisories/mfsa2019-12/
- bugzilla.mozilla.org/show_bug.cgi?id=1537924
- access.redhat.com/errata/RHSA-2019:0966
- access.redhat.com/errata/RHSA-2019:1144
- packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html