CVE-2013-2551

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 2022-03-28), 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: 74%CVSS: 8.8Exploit: NoneExposed: 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 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka "Internet Explorer Use After Free Vulnerability," a different vulnerability than CVE-2013-1308 and CVE-2013-1309.

CVSS v3
8.8
EG Score
9.0(high)
EPSS
99.4%
KEV
⚠ Exploited

Published

March 11, 2013

Last Modified

April 21, 2026

Advisory Details (1)

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

Microsoft Security Bulletin MS13-037 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-037

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 95× in last 7d / 401× 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 540 total refreshes for this CVE.

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

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-26175✓ verified
    First seen Jun 13, 2013

    Microsoft Internet Explorer - COALineDashStyleArray Integer Overflow (MS13-009) (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/ms13_037_svg_dashstyle✓ verified
    First seen Mar 6, 2013

    MS13-037 Microsoft Internet Explorer COALineDashStyleArray Integer Overflow

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2013-2551?
CVE-2013-2551 is a high vulnerability published on March 11, 2013. Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka "Internet Explorer Use After Free…
When was CVE-2013-2551 disclosed?
CVE-2013-2551 was first published in the National Vulnerability Database on March 11, 2013, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-2551 actively exploited?
Yes. CISA added CVE-2013-2551 to the Known Exploited Vulnerabilities catalog on March 28, 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-2013-2551?
CVE-2013-2551 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-2013-2551?
CVE-2013-2551 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-2013-2551?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-2551, 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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