Use-after-free vulnerability in the WebRTC implementation in Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, and SeaMonkey before 2.32 allows remote attackers to execute arbitrary code via crafted track data.
Conclusion & alert: CVE-2014-8641 is rated Moderate Risk (64/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.16%). Core evidence: EPSS rose +2.64% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.52% | 4.16% | +2.64% |
| 2 | 2025-12-04 | 1.84% | 1.52% | -0.32% |
| 3 | 2025-03-30 | — | 1.84% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2014-8641: 1 GLSA(s) (201504-01), 7 atom(s) (dev-libs/nspr, mail-client/thunderbird, …); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-8641 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2014-8641 |
suse
|
medium | CVE-2014-8641 severity moderate: SUSE including 119 source package names (MozillaFirefox, MozillaFirefox-102.11.0-150200.152.87.1, …), 286 product×package rows across 76 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (76 product lines)): Fixed 255, Known Not Affected 31. | https://www.suse.com/security/cve/CVE-2014-8641/ |
ubuntu
|
medium | CVE-2014-8641 medium priority: Ubuntu including 1 source packages (firefox), 5 status rows across 5 suites (lucid, precise, trusty, upstream, utopic): released 4, ignored 1. | https://ubuntu.com/security/CVE-2014-8641 |
: <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mozilla | seamonkey | <= 2.31 | cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* |
| mozilla | firefox | 31.0 | cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:* |
| mozilla | firefox | 31.1.0 | cpe:2.3:a:mozilla:firefox:31.1.0:*:*:*:*:*:*:* |
| mozilla | firefox | 31.1.1 | cpe:2.3:a:mozilla:firefox:31.1.1:*:*:*:*:*:*:* |
| mozilla | firefox | 31.3.0 | cpe:2.3:a:mozilla:firefox:31.3.0:*:*:*:*:*:*:* |
| mozilla | firefox_esr | 31.2 | cpe:2.3:a:mozilla:firefox_esr:31.2:*:*:*:*:*:*:* |
| mozilla | firefox | <= 34.0.5 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |