Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 22.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
Conclusion & alert: CVE-2013-1683 is rated High Risk (75.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.40%, 92th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.64% over the last day, indicating growing attacker interest. 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 | 1.76% | 5.40% | +3.64% |
| 2 | 2025-12-28 | 1.27% | 1.76% | +0.49% |
| 3 | 2025-03-30 | — | 1.27% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2013-1683 |
suse
|
critical | CVE-2013-1683 severity critical: SUSE including 44 source package names (MozillaFirefox, MozillaFirefox-140.2.0-160000.1.2, …), 90 product×package rows across 32 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (32 product lines)): Fixed 56, Known Not Affected 34. | https://www.suse.com/security/cve/CVE-2013-1683/ |
ubuntu
|
medium | CVE-2013-1683 medium priority: Ubuntu including 1 source packages (firefox), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): released 4, ignored 1. | https://ubuntu.com/security/CVE-2013-1683 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mozilla | firefox | <= 21.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | 19.0 | cpe:2.3:a:mozilla:firefox:19.0:*:*:*:*:*:*:* |
| mozilla | firefox | 19.0.1 | cpe:2.3:a:mozilla:firefox:19.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 19.0.2 | cpe:2.3:a:mozilla:firefox:19.0.2:*:*:*:*:*:*:* |
| mozilla | firefox | 20.0 | cpe:2.3:a:mozilla:firefox:20.0:*:*:*:*:*:*:* |
| mozilla | firefox | 20.0.1 | cpe:2.3:a:mozilla:firefox:20.0.1:*:*:*:*:*:*:* |