Is CVE-2011-4688 being actively exploited?

CVE-2011-4688 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4688?

CVE-2011-4688 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2011-4688

MEDIUM · CVSS 5.0EPSS 1.8%EU EUVD

Mozilla Firefox 8.0.1 and earlier does not prevent capture of data about the times of Same Origin Policy violations during IFRAME loading attempts, which makes it easier for remote attackers to determine whether a document exists in the browser cache via crafted JavaScript code.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness (CWE): CWE-264
EPSS score: 1.8% (79th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4606)
Published: December 7, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4606 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

mozilla / firefox
mozilla / firefox

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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