CVE-2013-1347

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), 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
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 78%CVSS: 8.8Exploit: NoneExposed: 0

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

Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly allocated or (2) is deleted, as exploited in the wild in May 2013.

CVSS v3
8.8
EG Score
9.0(high)
EPSS
99.5%
KEV
⚠ Exploited

Published

May 5, 2013

Last Modified

April 22, 2026

Advisory Details (2)

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

Microsoft Security Bulletin MS13-038 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-038
generic🔴 Active Exploitation

Microsoft Internet Explorer - CGenericElement Object Use-After-Free (Metasploit) - Windows remote Exploit

http://www.exploit-db.com/exploits/25294

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 90× in last 7d / 400× 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 534 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-25294✓ verified
    First seen May 7, 2013

    Microsoft Internet Explorer - CGenericElement Object Use-After-Free (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/ie_cgenericelement_uaf✓ verified
    First seen May 3, 2013

    MS13-038 Microsoft Internet Explorer CGenericElement Object Use-After-Free Vulnerability

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2013-1347?
CVE-2013-1347 is a high vulnerability published on May 5, 2013. Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly allocated or (2) is deleted, as exploited in the wild in May 2013.
When was CVE-2013-1347 disclosed?
CVE-2013-1347 was first published in the National Vulnerability Database on May 5, 2013, 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-2013-1347 actively exploited?
Yes. CISA added CVE-2013-1347 to the Known Exploited Vulnerabilities catalog on March 3, 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-2013-1347?
CVE-2013-1347 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-2013-1347?
CVE-2013-1347 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-2013-1347?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-1347, 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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