CVE-2018-8611

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 4%CVSS: 7.8Exploit: cisa kev · ssvc active · public exploitExposed: 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)
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
4%
EPSS %ILE
90%
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 64× in last 7d / 363× 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 720 total refreshes for this CVE.

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

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.

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2018-8611?
CVE-2018-8611 is a critical 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.

Dependency Blast Radius

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