CVE-2013-2551

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 2022-03-28), 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
Exploited in the wild
9.0EG
EchelonGraph verdictMitigate nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 74%CVSS: 8.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

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
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA SSVC

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%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
74%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

March 11, 2013

Last Modified

April 21, 2026

Advisory Details (1)

Auto-updated May 2, 2026
Fix referenced — no release 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 46× in last 7d / 225× 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 970 total refreshes for this CVE.

  1. 2026-10-06 07:20 UTCGHSA enrichment
  2. 2026-10-06 03:26 UTCGHSA enrichment
  3. 2026-10-06 03:25 UTCGHSA enrichment
  4. 2026-10-05 23:28 UTCGHSA enrichment
  5. 2026-10-05 19:31 UTCGHSA enrichment
  6. 2026-10-05 15:38 UTCGHSA enrichment
  7. 2026-10-05 11:42 UTCGHSA enrichment
  8. 2026-10-05 07:49 UTCGHSA enrichment
  9. 2026-10-05 03:55 UTCGHSA enrichment
  10. 2026-10-05 00:01 UTCGHSA enrichment
  11. 2026-10-04 20:08 UTCGHSA enrichment
  12. 2026-10-04 16:14 UTCGHSA enrichment
  13. 2026-10-04 12:20 UTCGHSA enrichment
  14. 2026-10-04 08:26 UTCGHSA enrichment
  15. 2026-10-04 04:31 UTCGHSA enrichment
  16. 2026-10-04 00:37 UTCGHSA enrichment
  17. 2026-10-03 20:43 UTCGHSA enrichment
  18. 2026-10-03 16:49 UTCGHSA enrichment
  19. 2026-10-03 12:55 UTCGHSA enrichment
  20. 2026-10-03 09:00 UTCGHSA enrichment
  21. 2026-10-03 05:04 UTCGHSA enrichment
  22. 2026-10-03 01:10 UTCGHSA enrichment
  23. 2026-10-02 21:16 UTCGHSA enrichment
  24. 2026-10-02 17:21 UTCEG score recompute
  25. 2026-10-02 17:21 UTCGHSA enrichment
Show 75 more
  1. 2026-10-02 13:26 UTCGHSA enrichment
  2. 2026-10-02 09:32 UTCGHSA enrichment
  3. 2026-10-02 05:38 UTCGHSA enrichment
  4. 2026-10-02 01:42 UTCGHSA enrichment
  5. 2026-10-01 21:46 UTCEG score recompute
  6. 2026-10-01 21:45 UTCGHSA enrichment
  7. 2026-10-01 17:51 UTCGHSA enrichment
  8. 2026-10-01 13:56 UTCGHSA enrichment
  9. 2026-10-01 10:02 UTCGHSA enrichment
  10. 2026-10-01 06:08 UTCGHSA enrichment
  11. 2026-10-01 02:14 UTCGHSA enrichment
  12. 2026-09-30 22:21 UTCGHSA enrichment
  13. 2026-09-30 18:26 UTCGHSA enrichment
  14. 2026-09-30 14:33 UTCGHSA enrichment
  15. 2026-09-30 10:39 UTCGHSA enrichment
  16. 2026-09-30 06:43 UTCGHSA enrichment
  17. 2026-09-30 02:49 UTCGHSA enrichment
  18. 2026-09-29 22:55 UTCGHSA enrichment
  19. 2026-09-29 19:01 UTCGHSA enrichment
  20. 2026-09-29 15:05 UTCGHSA enrichment
  21. 2026-09-29 11:12 UTCGHSA enrichment
  22. 2026-09-29 07:17 UTCGHSA enrichment
  23. 2026-09-29 03:24 UTCGHSA enrichment
  24. 2026-09-28 23:29 UTCEG score recompute
  25. 2026-09-28 23:29 UTCGHSA enrichment
  26. 2026-09-28 19:35 UTCGHSA enrichment
  27. 2026-09-28 15:38 UTCGHSA enrichment
  28. 2026-09-28 11:44 UTCGHSA enrichment
  29. 2026-09-28 07:50 UTCGHSA enrichment
  30. 2026-09-28 03:56 UTCGHSA enrichment
  31. 2026-09-28 00:02 UTCGHSA enrichment
  32. 2026-09-27 21:51 UTCCISA KEV update
  33. 2026-09-27 20:08 UTCGHSA enrichment
  34. 2026-09-27 16:14 UTCGHSA enrichment
  35. 2026-09-27 12:21 UTCGHSA enrichment
  36. 2026-09-27 08:27 UTCGHSA enrichment
  37. 2026-09-27 04:33 UTCGHSA enrichment
  38. 2026-09-27 00:37 UTCGHSA enrichment
  39. 2026-09-26 20:43 UTCGHSA enrichment
  40. 2026-09-26 16:48 UTCEG score recompute
  41. 2026-09-26 16:48 UTCGHSA enrichment
  42. 2026-09-26 15:52 UTCEPSS rescore
  43. 2026-09-26 12:54 UTCGHSA enrichment
  44. 2026-09-26 09:00 UTCGHSA enrichment
  45. 2026-09-26 05:03 UTCGHSA enrichment
  46. 2026-09-26 01:08 UTCGHSA enrichment
  47. 2026-09-25 21:11 UTCGHSA enrichment
  48. 2026-09-25 19:35 UTCCISA KEV update
  49. 2026-09-25 17:16 UTCGHSA enrichment
  50. 2026-09-25 14:55 UTCCISA KEV update
  51. 2026-09-25 13:21 UTCGHSA enrichment
  52. 2026-09-25 09:27 UTCGHSA enrichment
  53. 2026-09-25 05:33 UTCGHSA enrichment
  54. 2026-09-25 01:40 UTCGHSA enrichment
  55. 2026-09-24 21:46 UTCGHSA enrichment
  56. 2026-09-24 19:31 UTCCISA KEV update
  57. 2026-09-24 17:52 UTCGHSA enrichment
  58. 2026-09-24 13:58 UTCEG score recompute
  59. 2026-09-24 13:58 UTCGHSA enrichment
  60. 2026-09-24 13:57 UTCEPSS rescore
  61. 2026-09-24 10:04 UTCGHSA enrichment
  62. 2026-09-24 06:10 UTCGHSA enrichment
  63. 2026-09-24 02:16 UTCGHSA enrichment
  64. 2026-09-23 22:23 UTCGHSA enrichment
  65. 2026-09-23 18:29 UTCGHSA enrichment
  66. 2026-09-23 14:35 UTCEG score recompute
  67. 2026-09-23 14:35 UTCGHSA enrichment
  68. 2026-09-23 10:41 UTCGHSA enrichment
  69. 2026-09-23 06:44 UTCGHSA enrichment
  70. 2026-09-23 02:51 UTCGHSA enrichment
  71. 2026-09-22 22:57 UTCGHSA enrichment
  72. 2026-09-22 19:36 UTCCISA KEV update
  73. 2026-09-22 19:01 UTCGHSA enrichment
  74. 2026-09-22 15:07 UTCEG score recompute
  75. 2026-09-22 15:07 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-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 critical 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 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 attention. A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
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 (CRITICAL).
Which products are affected by CVE-2013-2551?
CVE-2013-2551 affects Microsoft Internet Explorer.
How do I remediate CVE-2013-2551?
A fix for CVE-2013-2551 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Dependency Blast Radius

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