CVE-2018-8611

HIGHNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-24), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 4%CVSS: 7.8Exploit: NoneExposed: 0

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

An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory, aka "Windows Kernel Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

CVSS v3
7.8
EG Score
9.0(high)
EPSS
89.8%
KEV
⚠ Exploited

Published

December 12, 2018

Last Modified

October 29, 2025

Advisory Details (3)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, 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-2018-8611
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8611
generic
http://www.securityfocus.com/bid/106082

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 130× in last 7d / 550× 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 779 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

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

Frequently asked(6)

What is CVE-2018-8611?
CVE-2018-8611 is a high vulnerability published on December 12, 2018. An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory, aka "Windows Kernel Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server…
When was CVE-2018-8611 disclosed?
CVE-2018-8611 was first published in the National Vulnerability Database on December 12, 2018, with the most recent update on October 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-8611 actively exploited?
Yes. CISA added CVE-2018-8611 to the Known Exploited Vulnerabilities catalog on May 24, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-8611?
CVE-2018-8611 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-8611?
CVE-2018-8611 affects Microsoft Windows. 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-2018-8611?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8611, 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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