CVE-2006-2779

CVE-2006-2779 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 9.3. 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-94.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 7% (93rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-94
• Affected product: Mozilla Firefox
• Published: 2006-06-02
• Last modified: 2026-06-16

Description

Mozilla Firefox and Thunderbird before 1.5.0.4 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) nested <option> tags in a select tag, (2) a DOMNodeRemoved mutation event, (3) "Content-implemented tree views," (4) BoxObjects, (5) the XBL implementation, (6) an iframe that attempts to remove itself, which leads to memory corruption.

Frequently asked questions

What is CVE-2006-2779?

Mozilla Firefox and Thunderbird before 1.5.0.4 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) nested <option> tags in a select tag, (2) a DOMNodeRemoved mutation event, (3) "Content-implemented tree views," (4) BoxObjects, (5) the XBL implementation, (6) an iframe that attempts to remove itself, which leads to memory corruption.

How severe is CVE-2006-2779?

CVE-2006-2779 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2006-2779 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-2779?

CVE-2006-2779 primarily affects Mozilla Firefox. In total, 43 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-2779?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2006-2779 published?

CVE-2006-2779 was published on 2006-06-02 and last updated on 2026-06-16.

References

• http://rhn.redhat.com/errata/RHSA-2006-0609.html
• http://secunia.com/advisories/20376
• http://secunia.com/advisories/20382
• http://secunia.com/advisories/20561
• http://secunia.com/advisories/20709
• http://secunia.com/advisories/21134
• http://secunia.com/advisories/21176
• http://secunia.com/advisories/21178
• http://secunia.com/advisories/21183
• http://secunia.com/advisories/21188
• http://secunia.com/advisories/21210
• http://secunia.com/advisories/21269
• http://secunia.com/advisories/21270
• http://secunia.com/advisories/21324
• http://secunia.com/advisories/21336
• http://secunia.com/advisories/21532
• http://secunia.com/advisories/21607
• http://secunia.com/advisories/21631
• http://secunia.com/advisories/21634
• http://secunia.com/advisories/21654
• http://secunia.com/advisories/22065
• http://secunia.com/advisories/22066
• http://secunia.com/advisories/27216
• http://securitytracker.com/id?1016202
• http://securitytracker.com/id?1016214
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-102943-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-200387-1
• http://www.debian.org/security/2006/dsa-1118
• http://www.debian.org/security/2006/dsa-1120
• http://www.debian.org/security/2006/dsa-1134

Affected products (43)

• cpe:2.3:a:mozilla:firefox:0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.9:rc:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.9.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.9.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.9.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.10:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:0.10.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5:beta1:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5:beta2:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:preview_release:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5:*:*:*:*:*:*:*

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