CVE-2013-3163

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 2023-03-30), 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: 71%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.

Microsoft Internet Explorer 8 through 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2013-3144 and CVE-2013-3151.

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
71%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

July 10, 2013

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3163
generic

Microsoft Security Bulletin MS13-055 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-055

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 60× in last 7d / 219× 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 679 total refreshes for this CVE.

  1. 2026-08-22 03:47 UTCGHSA enrichment
  2. 2026-08-22 00:09 UTCGHSA enrichment
  3. 2026-08-21 20:32 UTCGHSA enrichment
  4. 2026-08-21 16:55 UTCGHSA enrichment
  5. 2026-08-21 16:49 UTCCISA KEV update
  6. 2026-08-21 13:18 UTCGHSA enrichment
  7. 2026-08-21 09:41 UTCGHSA enrichment
  8. 2026-08-21 06:04 UTCGHSA enrichment
  9. 2026-08-21 02:27 UTCEG score recompute
  10. 2026-08-21 02:27 UTCGHSA enrichment
  11. 2026-08-20 22:50 UTCEPSS rescore
  12. 2026-08-20 22:49 UTCGHSA enrichment
  13. 2026-08-20 19:13 UTCGHSA enrichment
  14. 2026-08-20 17:06 UTCCISA KEV update
  15. 2026-08-20 15:35 UTCGHSA enrichment
  16. 2026-08-20 11:58 UTCGHSA enrichment
  17. 2026-08-20 08:16 UTCGHSA enrichment
  18. 2026-08-20 04:40 UTCGHSA enrichment
  19. 2026-08-20 01:03 UTCGHSA enrichment
  20. 2026-08-19 21:24 UTCGHSA enrichment
  21. 2026-08-19 17:46 UTCEG score recompute
  22. 2026-08-19 17:46 UTCGHSA enrichment
  23. 2026-08-19 17:33 UTCCISA KEV update
  24. 2026-08-19 16:59 UTCEPSS rescore
  25. 2026-08-19 14:09 UTCGHSA enrichment
Show 75 more
  1. 2026-08-19 10:32 UTCGHSA enrichment
  2. 2026-08-19 06:55 UTCGHSA enrichment
  3. 2026-08-19 03:18 UTCGHSA enrichment
  4. 2026-08-18 23:40 UTCGHSA enrichment
  5. 2026-08-18 20:03 UTCGHSA enrichment
  6. 2026-08-18 16:58 UTCCISA KEV update
  7. 2026-08-18 16:25 UTCGHSA enrichment
  8. 2026-08-18 12:42 UTCGHSA enrichment
  9. 2026-08-18 09:05 UTCGHSA enrichment
  10. 2026-08-18 05:24 UTCGHSA enrichment
  11. 2026-08-18 01:46 UTCGHSA enrichment
  12. 2026-08-17 22:08 UTCGHSA enrichment
  13. 2026-08-17 18:28 UTCGHSA enrichment
  14. 2026-08-17 14:48 UTCGHSA enrichment
  15. 2026-08-17 13:56 UTCCISA KEV update
  16. 2026-08-17 11:11 UTCGHSA enrichment
  17. 2026-08-17 07:34 UTCGHSA enrichment
  18. 2026-08-17 03:58 UTCGHSA enrichment
  19. 2026-08-17 00:21 UTCGHSA enrichment
  20. 2026-08-16 20:44 UTCGHSA enrichment
  21. 2026-08-16 17:07 UTCEG score recompute
  22. 2026-08-16 17:07 UTCGHSA enrichment
  23. 2026-08-16 13:30 UTCGHSA enrichment
  24. 2026-08-16 09:53 UTCGHSA enrichment
  25. 2026-08-16 06:16 UTCGHSA enrichment
  26. 2026-08-16 02:39 UTCEG score recompute
  27. 2026-08-16 02:39 UTCGHSA enrichment
  28. 2026-08-16 02:09 UTCEPSS rescore
  29. 2026-08-15 23:03 UTCGHSA enrichment
  30. 2026-08-15 19:26 UTCGHSA enrichment
  31. 2026-08-15 15:49 UTCGHSA enrichment
  32. 2026-08-15 12:12 UTCGHSA enrichment
  33. 2026-08-15 08:35 UTCGHSA enrichment
  34. 2026-08-15 04:58 UTCEG score recompute
  35. 2026-08-15 04:58 UTCGHSA enrichment
  36. 2026-08-15 01:25 UTCEPSS rescore
  37. 2026-08-15 01:20 UTCGHSA enrichment
  38. 2026-08-14 21:43 UTCGHSA enrichment
  39. 2026-08-14 18:06 UTCGHSA enrichment
  40. 2026-08-14 14:30 UTCGHSA enrichment
  41. 2026-08-14 10:53 UTCGHSA enrichment
  42. 2026-08-14 07:16 UTCGHSA enrichment
  43. 2026-08-14 03:39 UTCGHSA enrichment
  44. 2026-08-14 00:03 UTCEG score recompute
  45. 2026-08-14 00:03 UTCGHSA enrichment
  46. 2026-08-13 20:25 UTCGHSA enrichment
  47. 2026-08-13 16:48 UTCGHSA enrichment
  48. 2026-08-13 13:11 UTCGHSA enrichment
  49. 2026-08-13 09:34 UTCGHSA enrichment
  50. 2026-08-13 05:57 UTCGHSA enrichment
  51. 2026-08-13 02:20 UTCGHSA enrichment
  52. 2026-08-12 22:43 UTCGHSA enrichment
  53. 2026-08-12 19:06 UTCGHSA enrichment
  54. 2026-08-12 15:29 UTCEG score recompute
  55. 2026-08-12 15:29 UTCGHSA enrichment
  56. 2026-08-12 13:45 UTCEPSS rescore
  57. 2026-08-12 11:53 UTCGHSA enrichment
  58. 2026-08-12 08:15 UTCGHSA enrichment
  59. 2026-08-12 04:38 UTCGHSA enrichment
  60. 2026-08-12 01:01 UTCGHSA enrichment
  61. 2026-08-11 21:24 UTCGHSA enrichment
  62. 2026-08-11 19:32 UTCCISA KEV update
  63. 2026-08-11 17:47 UTCGHSA enrichment
  64. 2026-08-11 14:10 UTCEG score recompute
  65. 2026-08-11 14:10 UTCGHSA enrichment
  66. 2026-08-11 10:32 UTCGHSA enrichment
  67. 2026-08-11 06:55 UTCGHSA enrichment
  68. 2026-08-11 03:19 UTCGHSA enrichment
  69. 2026-08-10 23:42 UTCGHSA enrichment
  70. 2026-08-10 20:05 UTCGHSA enrichment
  71. 2026-08-10 16:28 UTCGHSA enrichment
  72. 2026-08-10 12:51 UTCGHSA enrichment
  73. 2026-08-10 09:14 UTCGHSA enrichment
  74. 2026-08-10 05:37 UTCGHSA enrichment
  75. 2026-08-10 02:00 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-28187✓ verified
    First seen Sep 10, 2013

    Microsoft Internet Explorer - CAnchorElement Use-After-Free (MS13-055) (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/ms13_055_canchor✓ verified
    First seen Jul 9, 2013

    MS13-055 Microsoft Internet Explorer CAnchorElement Use-After-Free

    Open source ↗

Frequently asked(6)

What is CVE-2013-3163?
CVE-2013-3163 is a critical vulnerability published on July 10, 2013. Microsoft Internet Explorer 8 through 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2013-3144 and CVE-2013-3151.
When was CVE-2013-3163 disclosed?
CVE-2013-3163 was first published in the National Vulnerability Database on July 10, 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-2013-3163 actively exploited?
Yes. CISA added CVE-2013-3163 to the Known Exploited Vulnerabilities catalog on March 30, 2023, 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-2013-3163?
CVE-2013-3163 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-2013-3163?
CVE-2013-3163 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-2013-3163?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-3163, 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.

Dependency Blast Radius

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