CVE-2009-2465

CRITICAL

Mozilla Firefox before 3.0.12 and Thunderbird allow remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via vectors involving double fr...

Affects 2 products across 1 vendor.

CVSS 2.010.0
EPSS5.4%
Percentile93th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
CWE Weakness Definitions
CWE-399: Resource Management Errors

Broad class covering failures in managing system resources such as memory, file handles, and connections.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2009. A critical vulnerability affects Mozilla systems (CVE-2009-2465). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2009-GLOBAL-083454-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2009-2465?
This vulnerability was disclosed in 2009. A critical vulnerability affects Mozilla systems (CVE-2009-2465). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2009-2465?
CVE-2009-2465 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 5.4%.
Is CVE-2009-2465 actively exploited?
No confirmed active exploitation of CVE-2009-2465 as of 2026-09-25.
How do I remediate CVE-2009-2465?
Priority: MEDIUM. Advisory: http://www.mozilla.org/security/announce/2009/mfsa2009-34.html PSIRT: [email protected]
What systems are affected by CVE-2009-2465?
CVE-2009-2465 affects Mozilla Firefox, Thunderbird.
Vulnerability Details
CVE IDCVE-2009-2465
BSIDBS-2009-GLOBAL-083454-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2009-07-22
Last Modified2026-06-16
ICS Relevance0%
Weakness (CWE)
Resource Management Errors
SourceNVD
Official Description

Mozilla Firefox before 3.0.12 and Thunderbird allow remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via vectors involving double frame construction, related to (1) nsHTMLContentSink.cpp, (2) nsXMLContentSink.cpp, and (3) nsPresShell.cpp, and the nsSubDocumentFrame::Reflow function.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Mozilla Firefox before 3.0.12 and Thunderbird allow remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via vectors involving double frame construction, related to (1) nsHTMLContentSink.cpp, (2) nsXMLContentSink.cpp, and (3) nsPresShell.cpp, and the nsSubDocumentFrame::Reflow function. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Mozilla Firefox ≤ 3.0.11
Mozilla Thunderbird 2.0.0.0 2.0.0.1 2.0.0.2 2.0.0.3 2.0.0.4 2.0.0.5
+15 more2.0.0.6 2.0.0.7 2.0.0.8 2.0.0.9 2.0.0.11 2.0.0.12 2.0.0.13 2.0.0.14 2.0.0.15 2.0.0.16 2.0.0.17 2.0.0.18 2.0.0.19 2.0.0.20 2.0.0.21
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 6294 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash7606ec55b79989ac92f9f162e948500cb66398096a3955290a345f2ed555136c532de3ee1e8419be4f6f2eb4f7f42028a347eb6e78df451f61b1bff81526f56d
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