CVE-2015-2502

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 2022-04-13), 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: 51%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pct · epss highExposed: 0

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

Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Memory Corruption Vulnerability," as exploited in the wild in August 2015.

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
51%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

August 19, 2015

Last Modified

April 22, 2026

Advisory Details (3)

Auto-updated May 2, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic
http://www.securityfocus.com/bid/76403
generic

Microsoft Security Bulletin MS15-093 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-093
generic🔴 Active Exploitation

Microsoft Issues Emergency Patch for Critical IE Flaw Exploited in the Wild - SecurityWeek

http://www.securityweek.com/microsoft-issues-emergency-patch-critical-ie-flaw-exploited-wild

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 58× in last 7d / 246× 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 926 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2015-2502?
CVE-2015-2502 is a critical vulnerability published on August 19, 2015. Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Memory Corruption Vulnerability," as exploited in the wild in August 2015.
When was CVE-2015-2502 disclosed?
CVE-2015-2502 was first published in the National Vulnerability Database on August 19, 2015, 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-2015-2502 actively exploited?
Yes. CISA added CVE-2015-2502 to the Known Exploited Vulnerabilities catalog on April 13, 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-2015-2502?
CVE-2015-2502 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-2015-2502?
CVE-2015-2502 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-2015-2502?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-2502, 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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