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Vulnerability record · public intelligence
CVE-2012-3958
UNKNOWN

CVE-2012-3958

Published Aug 29, 2012 · Updated Oct 23, 2026

Severity · CVSSUNKNOWN · 10.0
Known exploitationNot listed
EPSS / likelihood5.19%
QFinch risk score20 / 100

Original summary

Normalized public record · Updated Oct 23, 2026

Use-after-free vulnerability in the nsHTMLEditRules::DeleteNonTableElements function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

Use-after-free vulnerability in the nsHTMLEditRules::DeleteNonTableElements function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CVENVDEPSS
SSVC priority
LOW
Confidence
20%
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. oval:org.mitre.oval:def:16782 ↗
  2. RHSA-2012:1211 ↗
  3. bugzilla.mozilla.org ↗
  4. www.mozilla.org ↗
  5. USN-1548-1 ↗
  6. 55323 ↗
  7. USN-1548-2 ↗
  8. RHSA-2012:1210 ↗
  9. SUSE-SU-2012:1167 ↗
  10. SUSE-SU-2012:1157 ↗
  11. openSUSE-SU-2012:1065 ↗
  12. www.xerox.com ↗

Record history

Published Aug 29, 2012 · Last refreshed Oct 23, 2026

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