CVE-2011-2377: n/a vulnerability

CVE-2011-2377: Mozilla Firefox before 3.6.18 and 4.x through 4.0.1, Thunderbird before 3.1.11, and SeaMonkey through 2.0.1...

Mozilla Firefox before 3.6.18 and 4.x through 4.0.1, Thunderbird before 3.1.11, and SeaMonkey through 2.0.14 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a multipart/x-mixed-replace image.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 23:00 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Mozilla client-side memory corruption issue. A malicious multipart image could crash Firefox, Thunderbird, or SeaMonkey, and the CVE states arbitrary code execution may be possible. The main business risk is legacy software still present on endpoints, jump hosts, or embedded vendor stacks. Exposure is most likely where obsolete Mozilla browsers or mail clients remain installed, especially on unmanaged desktops, legacy Linux images, kiosks, or vendor-supported systems using bundled Mozilla components. Treat this as a legacy exposure cleanup item with high potential impact if affected clients remain reachable by untrusted content. It is not KEV-listed in the supplied evidence, so urgency depends on whether obsolete Mozilla software still exists in the environment. Mitigation focus: Upgrade Firefox, Thunderbird, and SeaMonkey beyond the affected versions named in the CVE.; Apply relevant operating-system vendor updates from Ubuntu, Red Hat, Mandriva, or SUSE where applicable.; Retire unsupported Mozilla client versions from managed endpoints and legacy images..

Prepared: Jun 28, 2026, 00:52 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

Conservative CVE-to-ATT&CK context

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Execution behavior lookup

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CVE-2011-2377 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 30, 2011, 16:00 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
https://bugzilla.mozilla.org/show_bug.cgi?id=639303CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:13872CVE reference · vdb-entry, signature
https://bugzilla.mozilla.org/show_bug.cgi?id=638018CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.