Is CVE-2006-4566 in the CISA KEV catalog?

No. CVE-2006-4566 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2006-4566?

CVE-2006-4566 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2006-4566?

CVE-2006-4566 has an EPSS score of 3.77% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2006-4566?

Upgrade firefox on debian unstable to 1.5.dfsg+1.5.0.7-1 or later.

CVE & CISA-KEV Catalog

CVE-2006-4566

MEDIUMEPSS 89th pctl

5.0

CVSS v2

NVD

Description

Mozilla Firefox before 1.5.0.7, Thunderbird before 1.5.0.7, and SeaMonkey before 1.0.5 allows remote attackers to cause a denial of service (crash) via a malformed JavaScript regular expression that ends with a backslash in an unterminated character set ("[\\"), which leads to a buffer over-read.

How to fix

Remediation Available

firefoxDebian

Fixed in:1.5.dfsg+1.5.0.7-1CVE-2006-4566

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.77%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Embed a live status badge for CVE-2006-4566

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.