CVE-2012-0477: n/a vulnerability

CVE-2012-0477: Multiple cross-site scripting (XSS) vulnerabilities in Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x b...

Multiple cross-site scripting (XSS) vulnerabilities in Mozilla Firefox 4.x through 11.0, Firefox ESR 10.x before 10.0.4, Thunderbird 5.0 through 11.0, Thunderbird ESR 10.x before 10.0.4, and SeaMonkey before 2.9 allow remote attackers to inject arbitrary web script or HTML via the (1) ISO-2022-KR or (2) ISO-2022-CN character set.

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 browser and mail-client XSS issue. A malicious page or message could abuse ISO-2022-KR or ISO-2022-CN character handling to inject script or HTML. Business urgency is mainly for environments still running legacy Firefox, Thunderbird, SeaMonkey, or old distro packages. Exposure is likely limited to legacy endpoints, kiosk systems, embedded builds, or retained mail clients using affected Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, or SeaMonkey versions. Treat this as a legacy hygiene issue unless affected versions remain in use. Prioritize removal or upgrade of obsolete browsers and mail clients because XSS in client software can support phishing, session theft, or content manipulation. Mitigation focus: Upgrade affected Mozilla products to fixed vendor-supported versions or later.; Review Mozilla MFSA-2012-29 for product-specific fixed releases.; Apply relevant Debian or Mandriva security updates where those packages are used..

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

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 25, 2012, 10:00 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:16889CVE reference · vdb-entry, signature
firefox-iso2022kr-xss(75154)CVE reference · vdb-entry, x_refsource_XF
https://bugzilla.mozilla.org/show_bug.cgi?id=718573CVE 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

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