CVE-2014-0322

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-04), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 85%CVSS: 8.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via vectors involving crafted JavaScript code, CMarkup, and the onpropertychange attribute of a script element, as exploited in the wild in January and February 2014.

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
85%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

February 14, 2014

Last Modified

April 22, 2026

Advisory Details (4)

Auto-updated May 2, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet. Sources: cert.
generic

Microsoft Security Bulletin MS14-012 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012
cert🔴 Active Exploitation

VU#732479 - Internet Explorer CMarkup use-after-free vulnerability

http://www.kb.cert.org/vuls/id/732479
generic🔴 Active Exploitation

Microsoft Internet Explorer - CMarkup Use-After-Free (MS14-012) (Metasploit) - Windows remote Exploit

http://www.exploit-db.com/exploits/32904
generic🟡 PoC Available

Microsoft Internet Explorer 10 - CMarkup Use-After-Free (MS14-012) - Windows remote Exploit

http://www.exploit-db.com/exploits/32851

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 54× in last 7d / 228× 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.

Showing the most recent 100 of 831 total refreshes for this CVE.

  1. 2026-09-19 11:36 UTCGHSA enrichment
  2. 2026-09-19 07:44 UTCGHSA enrichment
  3. 2026-09-19 03:55 UTCGHSA enrichment
  4. 2026-09-19 00:06 UTCGHSA enrichment
  5. 2026-09-18 20:18 UTCEG score recompute
  6. 2026-09-18 20:18 UTCGHSA enrichment
  7. 2026-09-18 19:21 UTCEPSS rescore
  8. 2026-09-18 19:20 UTCCISA KEV update
  9. 2026-09-18 16:28 UTCGHSA enrichment
  10. 2026-09-18 14:15 UTCCISA KEV update
  11. 2026-09-18 12:39 UTCGHSA enrichment
  12. 2026-09-18 08:50 UTCGHSA enrichment
  13. 2026-09-18 05:01 UTCGHSA enrichment
  14. 2026-09-18 01:12 UTCGHSA enrichment
  15. 2026-09-17 21:23 UTCEG score recompute
  16. 2026-09-17 21:23 UTCGHSA enrichment
  17. 2026-09-17 19:21 UTCEPSS rescore
  18. 2026-09-17 17:33 UTCGHSA enrichment
  19. 2026-09-17 12:46 UTCGHSA enrichment
  20. 2026-09-17 08:45 UTCGHSA enrichment
  21. 2026-09-17 04:56 UTCGHSA enrichment
  22. 2026-09-17 01:07 UTCGHSA enrichment
  23. 2026-09-16 21:18 UTCGHSA enrichment
  24. 2026-09-16 17:29 UTCEG score recompute
  25. 2026-09-16 17:28 UTCGHSA enrichment
Show 75 more
  1. 2026-09-16 14:10 UTCCISA KEV update
  2. 2026-09-16 13:35 UTCGHSA enrichment
  3. 2026-09-16 09:46 UTCGHSA enrichment
  4. 2026-09-16 05:56 UTCGHSA enrichment
  5. 2026-09-16 02:08 UTCGHSA enrichment
  6. 2026-09-15 22:19 UTCGHSA enrichment
  7. 2026-09-15 18:30 UTCGHSA enrichment
  8. 2026-09-15 14:41 UTCGHSA enrichment
  9. 2026-09-15 10:52 UTCGHSA enrichment
  10. 2026-09-15 06:59 UTCGHSA enrichment
  11. 2026-09-15 03:10 UTCGHSA enrichment
  12. 2026-09-14 23:20 UTCGHSA enrichment
  13. 2026-09-14 19:31 UTCGHSA enrichment
  14. 2026-09-14 19:24 UTCCISA KEV update
  15. 2026-09-14 15:42 UTCGHSA enrichment
  16. 2026-09-14 11:53 UTCGHSA enrichment
  17. 2026-09-14 08:04 UTCGHSA enrichment
  18. 2026-09-14 04:15 UTCGHSA enrichment
  19. 2026-09-14 00:27 UTCGHSA enrichment
  20. 2026-09-13 20:38 UTCGHSA enrichment
  21. 2026-09-13 16:49 UTCGHSA enrichment
  22. 2026-09-13 13:00 UTCGHSA enrichment
  23. 2026-09-13 09:10 UTCGHSA enrichment
  24. 2026-09-13 05:22 UTCGHSA enrichment
  25. 2026-09-13 01:33 UTCGHSA enrichment
  26. 2026-09-12 21:44 UTCGHSA enrichment
  27. 2026-09-12 17:55 UTCEG score recompute
  28. 2026-09-12 17:55 UTCGHSA enrichment
  29. 2026-09-12 14:55 UTCEPSS rescore
  30. 2026-09-12 14:06 UTCGHSA enrichment
  31. 2026-09-12 10:17 UTCGHSA enrichment
  32. 2026-09-12 06:28 UTCGHSA enrichment
  33. 2026-09-12 02:39 UTCGHSA enrichment
  34. 2026-09-11 22:49 UTCGHSA enrichment
  35. 2026-09-11 18:56 UTCGHSA enrichment
  36. 2026-09-11 18:49 UTCCISA KEV update
  37. 2026-09-11 15:03 UTCGHSA enrichment
  38. 2026-09-11 11:14 UTCGHSA enrichment
  39. 2026-09-11 07:22 UTCGHSA enrichment
  40. 2026-09-11 03:33 UTCGHSA enrichment
  41. 2026-09-10 23:44 UTCGHSA enrichment
  42. 2026-09-10 19:55 UTCGHSA enrichment
  43. 2026-09-10 19:28 UTCCISA KEV update
  44. 2026-09-10 16:06 UTCGHSA enrichment
  45. 2026-09-10 12:18 UTCEG score recompute
  46. 2026-09-10 12:18 UTCGHSA enrichment
  47. 2026-09-10 08:29 UTCGHSA enrichment
  48. 2026-09-10 04:38 UTCGHSA enrichment
  49. 2026-09-10 00:49 UTCGHSA enrichment
  50. 2026-09-09 21:00 UTCGHSA enrichment
  51. 2026-09-09 19:08 UTCCISA KEV update
  52. 2026-09-09 17:11 UTCGHSA enrichment
  53. 2026-09-09 13:22 UTCGHSA enrichment
  54. 2026-09-09 09:30 UTCGHSA enrichment
  55. 2026-09-09 05:41 UTCGHSA enrichment
  56. 2026-09-09 01:51 UTCGHSA enrichment
  57. 2026-09-08 22:03 UTCGHSA enrichment
  58. 2026-09-08 18:54 UTCCISA KEV update
  59. 2026-09-08 18:12 UTCGHSA enrichment
  60. 2026-09-08 14:02 UTCGHSA enrichment
  61. 2026-09-08 10:11 UTCGHSA enrichment
  62. 2026-09-08 06:20 UTCGHSA enrichment
  63. 2026-09-08 02:30 UTCGHSA enrichment
  64. 2026-09-07 22:42 UTCGHSA enrichment
  65. 2026-09-07 18:53 UTCEG score recompute
  66. 2026-09-07 18:53 UTCGHSA enrichment
  67. 2026-09-07 15:56 UTCEPSS rescore
  68. 2026-09-07 15:04 UTCGHSA enrichment
  69. 2026-09-07 11:16 UTCGHSA enrichment
  70. 2026-09-07 07:27 UTCGHSA enrichment
  71. 2026-09-07 03:34 UTCGHSA enrichment
  72. 2026-09-06 23:44 UTCGHSA enrichment
  73. 2026-09-06 19:56 UTCGHSA enrichment
  74. 2026-09-06 16:07 UTCEG score recompute
  75. 2026-09-06 16:06 UTCGHSA enrichment

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-32904✓ verified
    First seen Apr 16, 2014

    Microsoft Internet Explorer - CMarkup Use-After-Free (MS14-012) (Metasploit)

    Open source ↗
  • Exploit-DBEDB-32851✓ verified
    First seen Apr 14, 2014

    Microsoft Internet Explorer 10 - CMarkup Use-After-Free (MS14-012)

    Open source ↗
  • Metasploitexploit/windows/browser/ms14_012_cmarkup_uaf✓ verified
    First seen Feb 13, 2014

    MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2014-0322?
CVE-2014-0322 is a critical vulnerability published on February 14, 2014. Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via vectors involving crafted JavaScript code, CMarkup, and the onpropertychange attribute of a script element, as exploited in the wild in January and February 2014.
When was CVE-2014-0322 disclosed?
CVE-2014-0322 was first published in the National Vulnerability Database on February 14, 2014, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-0322 actively exploited?
Yes. CISA added CVE-2014-0322 to the Known Exploited Vulnerabilities catalog on May 4, 2022, affecting Microsoft Internet Explorer. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2014-0322?
CVE-2014-0322 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2014-0322?
CVE-2014-0322 affects Microsoft Internet Explorer. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2014-0322?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-0322, 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.

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