How severe is CVE-2006-6971?

CVE-2006-6971 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-6971 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-6971?

CVE-2006-6971 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-6971?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-6971 published?

CVE-2006-6971 was published on 2007-02-07 and last updated on 2026-06-16.

CVE-2006-6971

CVE-2006-6971 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mozilla Firefox
Published: 2007-02-07
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2006-6971?: 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.
How severe is CVE-2006-6971?: CVE-2006-6971 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-6971 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6971?: CVE-2006-6971 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-6971?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-6971 published?: CVE-2006-6971 was published on 2007-02-07 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox:2.0.0.1:*:*:*:*:*:*:*

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