What’s Vulnerable › Vulnerabilities

CVE-2006-4566

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2006-09-15 · updated 2026-06-16

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.

Affected products

• Mozilla Firefox: through 1.5.0.6
• Mozilla Seamonkey: through 1.0.4
• Mozilla Thunderbird: through 1.5.0.6

References

• http://secunia.com/advisories/21906
• http://secunia.com/advisories/21915
• http://secunia.com/advisories/21916
• http://secunia.com/advisories/21939
• http://secunia.com/advisories/21940
• http://secunia.com/advisories/21949
• http://secunia.com/advisories/21950
• http://secunia.com/advisories/22001
• http://secunia.com/advisories/22025
• http://secunia.com/advisories/22036
• http://secunia.com/advisories/22055

Get alerted when CVE-2006-4566 or the next vulnerability affects your stack