Mozilla Firefox before 22.0 does not properly enforce the X-Frame-Options protection mechanism, which allows remote attackers to conduct clickjacking attacks via a crafted web site that uses the HTTP server push feature with multipart responses.
Conclusion & alert: CVE-2013-1696 is rated Moderate Risk (43/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.66%). Core evidence: EPSS rose +1.24% 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 | 0.42% | 1.66% | +1.24% |
| 2 | 2025-03-30 | 0.75% | 0.42% | -0.33% |
| 3 | 2025-03-29 | — | 0.75% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.0 | 2.0 | MEDIUM |
|
4.9 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-1696 |
suse
|
medium | CVE-2013-1696 severity moderate: SUSE including 48 source package names (MozillaFirefox, MozillaFirefox-140.2.0-160000.1.2, …), 129 product×package rows across 48 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 7, … (48 product lines)): Known Not Affected 69, Fixed 60. | https://www.suse.com/security/cve/CVE-2013-1696/ |
ubuntu
|
low | CVE-2013-1696 low 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-2013-1696 |
| 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:*:*:*:*:*:*:* |