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 55× in last 7d / 206× 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 618 total refreshes for this CVE.

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

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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