CVE-2011-0065

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:C/I:C/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 73.8% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 74%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 74%CVSS v2: 10.0Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

Use-after-free vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, allows remote attackers to execute arbitrary code via vectors related to OBJECT's mChannel.

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0(low)
EG Risk
79(Track)
EG Risk 79/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation74% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
74%
EPSS %ILE
99%
KEV
Not listed

Published

May 7, 2011

Last Modified

April 29, 2026

References (22)

Vendor Advisories for CVE-2011-0065(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuthunderbird (3.1.10+build1+nobinonly-0ubuntu0.10.10.1) @ maverick2026-05-29ubuntu
ubuntuxulrunner-1.9.1 (1.9.1.19+build2+nobinonly-0ubuntu0.9.10.1) @ karmic2026-05-29ubuntu
ubuntuxulrunner-1.9.2 (1.9.2.17+build3+nobinonly-0ubuntu0.9.10.1) @ karmic2026-05-29ubuntu
ubuntuthunderbird (3.1.10+build1+nobinonly-0ubuntu0.11.04.1) @ natty2026-05-29ubuntu
redhatxulrunner-0:1.9.2.17-4.el6_02011-04-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 1 ecosystem)
Debian:6.0(3)
PackageVulnerable rangeFixed inDependents
iceape2.0.11-2, 2.0.11-3, 2.0.11-42.0.11-5—
icedove3.0.11-1, 3.0.11-1+squeeze13.0.11-1+squeeze2—
iceweasel3.5.16-4 ... 3.5.16-7~bpo50+1 (6 versions)3.5.16-7—

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 0× in last 7d / 5× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-19 16:58 UTCEPSS rescore
  2. 2026-08-18 13:42 UTCEPSS rescore
  3. 2026-08-15 01:25 UTCEPSS rescore
  4. 2026-08-08 16:31 UTCEPSS rescore
  5. 2026-08-06 13:41 UTCEPSS rescore
  6. 2026-07-26 13:42 UTCEG score recompute▲ 10.00
  7. 2026-07-23 14:14 UTCEPSS rescore
  8. 2026-07-23 01:04 UTCEG score recompute
  9. 2026-07-23 00:39 UTCEG score recompute▼ 7.10
  10. 2026-07-23 00:07 UTCEG score recompute▲ 7.10
  11. 2026-07-22 21:46 UTCEG score recompute
  12. 2026-07-22 14:03 UTCEPSS rescore
  13. 2026-07-21 15:21 UTCEPSS rescore
  14. 2026-07-20 17:03 UTCEPSS rescore
  15. 2026-07-20 17:03 UTCEPSS rescore
  16. 2026-07-15 16:54 UTCEPSS rescore
  17. 2026-07-15 16:54 UTCEPSS rescore
  18. 2026-07-13 22:25 UTCEPSS rescore
  19. 2026-07-11 08:22 UTCEPSS rescore
  20. 2026-07-11 08:22 UTCEPSS rescore
  21. 2026-07-08 15:10 UTCEPSS rescore
  22. 2026-07-08 15:10 UTCEPSS rescore
  23. 2026-07-06 16:23 UTCEPSS rescore
  24. 2026-07-02 14:01 UTCEPSS rescore
  25. 2026-07-01 15:02 UTCEPSS rescore
Show 48 more
  1. 2026-07-01 15:02 UTCEPSS rescore
  2. 2026-06-30 23:19 UTCEPSS rescore
  3. 2026-06-30 23:19 UTCEPSS rescore
  4. 2026-06-28 04:53 UTCEPSS rescore
  5. 2026-06-28 04:52 UTCEPSS rescore
  6. 2026-06-25 13:46 UTCEPSS rescore
  7. 2026-06-24 14:02 UTCEPSS rescore
  8. 2026-06-24 14:02 UTCEPSS rescore
  9. 2026-06-23 21:30 UTCEPSS rescore
  10. 2026-06-23 21:30 UTCEPSS rescore
  11. 2026-06-19 19:22 UTCEPSS rescore
  12. 2026-06-19 19:22 UTCEPSS rescore
  13. 2026-06-17 17:49 UTCEPSS rescore
  14. 2026-06-17 17:49 UTCEPSS rescore
  15. 2026-06-17 17:49 UTCEPSS rescore
  16. 2026-06-16 17:49 UTCEPSS rescore
  17. 2026-06-15 17:44 UTCEPSS rescore
  18. 2026-06-14 23:14 UTCEPSS rescore
  19. 2026-06-14 23:14 UTCEPSS rescore
  20. 2026-06-13 22:57 UTCEPSS rescore
  21. 2026-06-13 22:57 UTCEPSS rescore
  22. 2026-06-12 23:08 UTCEPSS rescore
  23. 2026-06-11 13:56 UTCEPSS rescore
  24. 2026-06-10 22:14 UTCEPSS rescore
  25. 2026-06-06 13:45 UTCEPSS rescore
  26. 2026-06-06 13:44 UTCEPSS rescore
  27. 2026-06-05 22:44 UTCEPSS rescore
  28. 2026-06-05 06:08 UTCEPSS rescore
  29. 2026-06-05 06:07 UTCEPSS rescore
  30. 2026-06-04 13:09 UTCEPSS rescore
  31. 2026-06-04 13:09 UTCEPSS rescore
  32. 2026-06-02 20:10 UTCEPSS rescore
  33. 2026-06-02 20:10 UTCEPSS rescore
  34. 2026-05-31 00:14 UTCEPSS rescore
  35. 2026-05-31 00:14 UTCEPSS rescore
  36. 2026-05-29 08:04 UTCEG score recompute
  37. 2026-05-29 08:04 UTCVendor advisory
  38. 2026-05-29 08:04 UTCGHSA enrichment
  39. 2026-05-28 13:42 UTCEPSS rescore
  40. 2026-05-28 13:42 UTCEPSS rescore
  41. 2026-05-28 13:42 UTCEPSS rescore
  42. 2026-05-26 07:16 UTCEPSS rescore
  43. 2026-05-26 07:16 UTCEPSS rescore
  44. 2026-05-20 22:37 UTCEPSS rescore
  45. 2026-05-20 22:37 UTCEPSS rescore
  46. 2026-05-20 22:37 UTCEPSS rescore
  47. 2026-05-18 21:29 UTCEPSS rescore
  48. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(6 references)

Working exploit code is in the public domain (2 Metasploit modules) (4 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-18377✓ verified
    First seen Jan 17, 2012

    Mozilla Firefox 3.6.16 (OSX) - mChannel Use-After-Free (Metasploit) (2)

    Open source ↗
  • Exploit-DBEDB-17672✓ verified
    First seen Aug 16, 2011

    Mozilla Firefox 3.6.16 (Windows 7) - mChannel Object Use-After-Free

    Open source ↗
  • Exploit-DBEDB-17650✓ verified
    First seen Aug 10, 2011

    Mozilla Firefox 3.6.16 (Windows) - mChannel Use-After-Free (Metasploit) (1)

    Open source ↗
  • Exploit-DBEDB-17612✓ verified
    First seen Aug 5, 2011

    Mozilla Firefox 3.6.16 - OBJECT mChannel Remote Code Execution (DEP Bypass) (Metasploit)

    Open source ↗
  • Metasploitexploit/osx/browser/mozilla_mchannel✓ verified
    First seen May 10, 2011

    Mozilla Firefox 3.6.16 mChannel Use-After-Free

    Open source ↗
  • Metasploitexploit/windows/browser/mozilla_mchannel✓ verified
    First seen May 10, 2011

    Mozilla Firefox 3.6.16 mChannel Use-After-Free Vulnerability

    Open source ↗

Frequently asked(4)

What is CVE-2011-0065?
CVE-2011-0065 is a high vulnerability published on May 7, 2011. Use-after-free vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, allows remote attackers to execute arbitrary code via vectors related to OBJECT's mChannel.
When was CVE-2011-0065 disclosed?
CVE-2011-0065 was first published in the National Vulnerability Database on May 7, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-0065 actively exploited?
CVE-2011-0065 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74% probability of exploitation in the next 30 days, which ranks it in the top 0.6% of all scored CVEs.
How do I remediate CVE-2011-0065?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-0065, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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