Is CVE-2006-6971 being actively exploited?

CVE-2006-6971 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-6971?

CVE-2006-6971 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2006-6971

MEDIUM · CVSS 5.0EPSS 1.3%EU EUVD

Mozilla Firefox 2.0, possibly only when running on Windows, allows remote attackers to bypass the Phishing Protection mechanism by representing an IP address in (1) dotted-hex, (2) dotted-octal, (3) single decimal integer, (4) single hex integer, or (5) single octal integer format, which is not captured by the blacklist filter.

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-20
EPSS score: 1.3% (70th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-6953)
Published: February 7, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-6953 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

mozilla / firefox

References

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

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