CVE-2012-0451: n/a vulnerability

CVE-2012-0451: CRLF injection vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbi...

CRLF injection vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 allows remote web servers to bypass intended Content Security Policy (CSP) restrictions and possibly conduct cross-site scripting (XSS) attacks via crafted HTTP headers.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 18:23 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Mozilla client-side flaw where a malicious website could weaken browser security controls and possibly trigger cross-site scripting. The affected versions are from the Firefox, Thunderbird, and SeaMonkey 2012 era, so business risk is mainly legacy systems or unmanaged endpoints. Exposure is likely limited to endpoints still running Firefox 4.x through 10.0, Firefox ESR before 10.0.3, Thunderbird 5.0 through 10.0, Thunderbird ESR before 10.0.3, or SeaMonkey before 2.8. Treat this as a legacy exposure cleanup item, not an emergency based on the supplied evidence. Escalate if vulnerable clients remain on production, privileged, or internet-browsing endpoints. Mitigation focus: Remove or upgrade all affected Mozilla client versions.; Apply relevant vendor updates from Mozilla or operating-system package advisories.; Prioritize unmanaged kiosks, lab systems, and legacy desktop images..

Prepared: Jun 24, 2026, 12:52 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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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 14, 2012, 19:00 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

3Source 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=717511CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:14909CVE reference · vdb-entry, signature

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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