Product · KEV exposure
Mozilla Firefox known exploited vulnerabilities
We track 8 CVEs in Mozilla Firefox. 5 of them are on CISA's Known Exploited Vulnerabilities catalog, meaning CISA has evidence of exploitation in the wild (listed 2022–2022). CISA flags 1 of them as used in ransomware campaigns. The most recent is CVE-2026-15719.
- CVEs tracked
- 8
- On CISA KEV
- 5
- Ransomware use
- 1
- Rated critical
- 2
Every Mozilla Firefox CVE we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV | Patch by |
|---|---|---|---|---|---|
| CVE-2026-15719 Firefox DOM Navigation site-isolation flaw with public exploit codewrite-up | [ MEDIUM ] | 5.4 | 0.3% | — | — |
| CVE-2026-15718 Firefox JavaScript/WebAssembly invalid pointer with public exploit codewrite-up | [ MEDIUM ] | 4.3 | 0.5% | — | — |
| CVE-2026-10702 JIT miscompilation in Firefox JavaScript engine allows renderer code executionwrite-up | [ MEDIUM ] | 4.3 | 0.9% | — | — |
| CVE-2024-9680 Mozilla Firefox Use-After-Free Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 23.2% | ||
| CVE-2015-4495 Mozilla Firefox Security Feature Bypass Vulnerability | [ HIGH ] | 8.8 | 68.6% | ||
| CVE-2022-26486 Mozilla Firefox Use-After-Free Vulnerability | [ CRITICAL ] | 9.6 | 2.4% | ||
| CVE-2022-26485 Mozilla Firefox Use-After-Free Vulnerability | [ HIGH ] | 8.8 | 14.3% | ||
| CVE-2013-1675 Mozilla Firefox Information Disclosure Vulnerability | [ MEDIUM ] | 6.5 | 6.7% |
Sorted by date added to KEV. Severity and CVSS as stated by NVD or the vendor; EPSS from FIRST.org. "Patch by" is CISA's BOD 22-01 deadline for US federal agencies, a useful priority signal for everyone else. Machine-readable: /api/v1/vendors/mozilla.json.
Our Mozilla Firefox coverage
Other Mozilla products
Every row links to its CVE record with the CISA required action, catalog coverage and primary sources. We describe impact and remediation only; no exploit code. See the full KEV tracker or compare KEV catalogs.