CVE-2013-0766: n/a vulnerability

CVE-2013-0766: Use-after-free vulnerability in the ~nsHTMLEditRules implementation in Mozilla Firefox before 18.0, Firefox...

Use-after-free vulnerability in the ~nsHTMLEditRules implementation in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.1, Thunderbird before 17.0.2, Thunderbird ESR 10.x before 10.0.12 and 17.x before 17.0.1, and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 14:41 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2013-0766 is a Mozilla memory-safety flaw in older Firefox, Thunderbird, and SeaMonkey releases. A remote attacker could potentially trigger heap corruption, leading to application crash or arbitrary code execution. The provided sources do not identify a specific attack vector or active exploitation. Exposure is most likely on legacy desktops, servers, kiosks, or images retaining 2013-era Mozilla browsers or mail clients, including vendor-packaged Firefox, Thunderbird, or SeaMonkey builds from SUSE, Red Hat, or Ubuntu repositories. Treat as high priority only if legacy Mozilla software remains in the environment. The business risk is remote code execution through old client applications; modern fully patched deployments are unlikely to be exposed. Mitigation focus: Upgrade Firefox, Thunderbird, and SeaMonkey to fixed or later versions.; Apply relevant SUSE, Red Hat, or Ubuntu security updates where vendor packages are used.; Remove unsupported legacy Mozilla applications from managed endpoints and golden images..

Prepared: Jun 24, 2026, 12:04 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-2013-0766 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 13, 2013, 20:00 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
oval:org.mitre.oval:def:16189CVE reference · vdb-entry, signature
https://bugzilla.mozilla.org/show_bug.cgi?id=803853CVE 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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