CVE-2009-2463: n/a vulnerability

CVE-2009-2463: Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc...

Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 05:52 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Mozilla base64 processing flaw that could crash affected applications and may allow code execution. The main business risk is legacy software: Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19. Modern supported versions should not be affected based on the provided sources. Exposure is most likely in obsolete Mozilla client installations or older Linux/Solaris packages that bundled vulnerable NSPR or Mozilla components. Current managed endpoints are unlikely to be exposed unless legacy applications remain installed. Treat this as a legacy exposure cleanup item with high impact if found. It is not a current KEV-driven emergency from the supplied evidence, but vulnerable installations should be removed or updated because possible code execution is documented. Mitigation focus: Upgrade Firefox, Thunderbird, and SeaMonkey beyond the fixed versions listed by Mozilla.; Remove unsupported Mozilla-era applications from managed endpoints.; Apply relevant Red Hat, Fedora, SUSE, or Sun vendor updates where applicable..

Prepared: Jun 28, 2026, 10:26 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Execution behavior lookup

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CVE-2009-2463 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 22, 2009, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
oval:org.mitre.oval:def:10369CVE reference · vdb-entry, signature
https://bugzilla.mozilla.org/show_bug.cgi?id=492779CVE reference · x_refsource_CONFIRM
FEDORA-2009-7961CVE reference · vendor-advisory, x_refsource_FEDORA

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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