Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, Thunderbird before 3.0.11 and 3.1.x before 3.1.7, and SeaMonkey before 2.0.11 do not properly validate downloadable fonts before use within an operating system's font implementation, which allows remote attackers to execute arbitrary code via vectors related to @font-face Cascading Style Sheets (CSS) rules.
Conclusion & alert: CVE-2010-3768 is rated High Risk (67.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 4.83%, 91th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 6.14% | 4.83% | -1.31% |
| 2 | 2026-04-12 | 7.59% | 6.14% | -1.45% |
| 3 | 2026-03-16 | — | 7.59% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
high | CVE-2010-3768: 1 GLSA(s) (201301-01), 14 atom(s) (dev-libs/nss, mail-client/mozilla-thunderbird, …); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2010-3768 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2010-3768 |
ubuntu
|
low | CVE-2010-3768 low priority: Ubuntu including 5 source packages (firefox, firefox-3.0, firefox-3.5, seamonkey, xulrunner-1.9.2), 30 status rows across 6 suites (dapper, hardy, karmic, lucid, maverick, upstream): released 14, DNE 11, needs-triage 3, ignored 2. | https://ubuntu.com/security/CVE-2010-3768 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mozilla | firefox | 3.6 | cpe:2.3:a:mozilla:firefox:3.6:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.2 | cpe:2.3:a:mozilla:firefox:3.6.2:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.3 | cpe:2.3:a:mozilla:firefox:3.6.3:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.4 | cpe:2.3:a:mozilla:firefox:3.6.4:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.6 | cpe:2.3:a:mozilla:firefox:3.6.6:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.7 | cpe:2.3:a:mozilla:firefox:3.6.7:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.8 | cpe:2.3:a:mozilla:firefox:3.6.8:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.9 | cpe:2.3:a:mozilla:firefox:3.6.9:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.10 | cpe:2.3:a:mozilla:firefox:3.6.10:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.11 | cpe:2.3:a:mozilla:firefox:3.6.11:*:*:*:*:*:*:* |
| mozilla | firefox | 3.6.12 | cpe:2.3:a:mozilla:firefox:3.6.12:*:*:*:*:*:*:* |
| mozilla | seamonkey | <= 2.0.10 | cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0 | cpe:2.3:a:mozilla:seamonkey:1.0:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0 | cpe:2.3:a:mozilla:seamonkey:1.0:alpha:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0 | cpe:2.3:a:mozilla:seamonkey:1.0:beta:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.1 | cpe:2.3:a:mozilla:seamonkey:1.0.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.2 | cpe:2.3:a:mozilla:seamonkey:1.0.2:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.3 | cpe:2.3:a:mozilla:seamonkey:1.0.3:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.4 | cpe:2.3:a:mozilla:seamonkey:1.0.4:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.5 | cpe:2.3:a:mozilla:seamonkey:1.0.5:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.6 | cpe:2.3:a:mozilla:seamonkey:1.0.6:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.7 | cpe:2.3:a:mozilla:seamonkey:1.0.7:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.8 | cpe:2.3:a:mozilla:seamonkey:1.0.8:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.0.9 | cpe:2.3:a:mozilla:seamonkey:1.0.9:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1 | cpe:2.3:a:mozilla:seamonkey:1.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1 | cpe:2.3:a:mozilla:seamonkey:1.1:alpha:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1 | cpe:2.3:a:mozilla:seamonkey:1.1:beta:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.1 | cpe:2.3:a:mozilla:seamonkey:1.1.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.2 | cpe:2.3:a:mozilla:seamonkey:1.1.2:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.3 | cpe:2.3:a:mozilla:seamonkey:1.1.3:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.4 | cpe:2.3:a:mozilla:seamonkey:1.1.4:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.5 | cpe:2.3:a:mozilla:seamonkey:1.1.5:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.6 | cpe:2.3:a:mozilla:seamonkey:1.1.6:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.7 | cpe:2.3:a:mozilla:seamonkey:1.1.7:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.8 | cpe:2.3:a:mozilla:seamonkey:1.1.8:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.9 | cpe:2.3:a:mozilla:seamonkey:1.1.9:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.10 | cpe:2.3:a:mozilla:seamonkey:1.1.10:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.11 | cpe:2.3:a:mozilla:seamonkey:1.1.11:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.12 | cpe:2.3:a:mozilla:seamonkey:1.1.12:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.13 | cpe:2.3:a:mozilla:seamonkey:1.1.13:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.14 | cpe:2.3:a:mozilla:seamonkey:1.1.14:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.15 | cpe:2.3:a:mozilla:seamonkey:1.1.15:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.16 | cpe:2.3:a:mozilla:seamonkey:1.1.16:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.17 | cpe:2.3:a:mozilla:seamonkey:1.1.17:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.18 | cpe:2.3:a:mozilla:seamonkey:1.1.18:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.1.19 | cpe:2.3:a:mozilla:seamonkey:1.1.19:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.5.0.8 | cpe:2.3:a:mozilla:seamonkey:1.5.0.8:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.5.0.9 | cpe:2.3:a:mozilla:seamonkey:1.5.0.9:*:*:*:*:*:*:* |
| mozilla | seamonkey | 1.5.0.10 | cpe:2.3:a:mozilla:seamonkey:1.5.0.10:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:alpha_1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:alpha_2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:alpha_3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:beta_1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:beta_2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:rc1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:rc2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.1 | cpe:2.3:a:mozilla:seamonkey:2.0.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.2 | cpe:2.3:a:mozilla:seamonkey:2.0.2:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.3 | cpe:2.3:a:mozilla:seamonkey:2.0.3:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.4 | cpe:2.3:a:mozilla:seamonkey:2.0.4:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.5 | cpe:2.3:a:mozilla:seamonkey:2.0.5:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.6 | cpe:2.3:a:mozilla:seamonkey:2.0.6:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.7 | cpe:2.3:a:mozilla:seamonkey:2.0.7:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.8 | cpe:2.3:a:mozilla:seamonkey:2.0.8:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.9 | cpe:2.3:a:mozilla:seamonkey:2.0.9:*:*:*:*:*:*:* |
| mozilla | firefox | <= 3.5.15 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0 | cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0 | cpe:2.3:a:mozilla:firefox:1.0:preview_release:*:*:*:*:*:* |
| mozilla | firefox | 1.0.1 | cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.2 | cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.3 | cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.4 | cpe:2.3:a:mozilla:firefox:1.0.4:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.5 | cpe:2.3:a:mozilla:firefox:1.0.5:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.6 | cpe:2.3:a:mozilla:firefox:1.0.6:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.7 | cpe:2.3:a:mozilla:firefox:1.0.7:*:*:*:*:*:*:* |
| mozilla | firefox | 1.0.8 | cpe:2.3:a:mozilla:firefox:1.0.8:*:*:*:*:*:*:* |
| mozilla | firefox | 1.5 | cpe:2.3:a:mozilla:firefox:1.5:*:*:*:*:*:*:* |
| mozilla | firefox | 1.5 | cpe:2.3:a:mozilla:firefox:1.5:beta1:*:*:*:*:*:* |
| mozilla | firefox | 1.5 | cpe:2.3:a:mozilla:firefox:1.5:beta2:*:*:*:*:*:* |