CVE-2007-2867

CVE-2007-2867 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-119.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Mozilla Firefox
• Published: 2007-06-01
• Last modified: 2026-06-16

Description

Multiple vulnerabilities in the layout engine for Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, Thunderbird 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, and SeaMonkey 1.0.9 and 1.1.2 allow remote attackers to cause a denial of service (crash) via vectors related to dangling pointers, heap corruption, signed/unsigned, and other issues.

Frequently asked questions

What is CVE-2007-2867?

Multiple vulnerabilities in the layout engine for Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, Thunderbird 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, and SeaMonkey 1.0.9 and 1.1.2 allow remote attackers to cause a denial of service (crash) via vectors related to dangling pointers, heap corruption, signed/unsigned, and other issues.

How severe is CVE-2007-2867?

CVE-2007-2867 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-2867 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-2867?

CVE-2007-2867 primarily affects Mozilla Firefox. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-2867?

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-2007-2867 published?

CVE-2007-2867 was published on 2007-06-01 and last updated on 2026-06-16.

References

• http://fedoranews.org/cms/node/2747
• http://fedoranews.org/cms/node/2749
• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742
• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00774579
• http://osvdb.org/35134
• http://secunia.com/advisories/24406
• http://secunia.com/advisories/24456
• http://secunia.com/advisories/25469
• http://secunia.com/advisories/25476
• http://secunia.com/advisories/25488
• http://secunia.com/advisories/25489
• http://secunia.com/advisories/25490
• http://secunia.com/advisories/25491
• http://secunia.com/advisories/25492
• http://secunia.com/advisories/25496
• http://secunia.com/advisories/25533
• http://secunia.com/advisories/25534
• http://secunia.com/advisories/25559
• http://secunia.com/advisories/25635
• http://secunia.com/advisories/25644
• http://secunia.com/advisories/25647
• http://secunia.com/advisories/25664
• http://secunia.com/advisories/25685
• http://secunia.com/advisories/25750
• http://secunia.com/advisories/25858
• http://secunia.com/advisories/27423
• http://secunia.com/advisories/28363
• http://security.gentoo.org/glsa/glsa-200706-06.xml
• http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.363947
• http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.571857

Affected products (45)

• cpe:2.3:a:mozilla:firefox:1.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.0.11:*:*:*:*:*:*:*
• 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:1.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:1.5.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:1.5.1:*:*:*:*:*:*:*

More vulnerabilities in Mozilla Firefox

• CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
• CVE-2026-4692 — Critical (CVSS 10.0): Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR…
• CVE-2026-4689 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was…
• CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
• CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
• CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…

All CVEs affecting Mozilla Firefox →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

• CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
• CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
• CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
• CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
• CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
• CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →