CVE-2021-1732

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 2021-11-03), 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: 78%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · 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.

Windows Win32k Elevation of Privilege Vulnerability

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
78%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

February 25, 2021

Last Modified

October 30, 2025

Advisory Details (4)

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-2021-1732
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-2021-1732
generic

Packet Storm

http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.html
generic

Packet Storm

http://packetstormsecurity.com/files/161880/Win32k-ConsoleControl-Offset-Confusion.html

Weakness Classification(2)

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 65× in last 7d / 387× 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 791 total refreshes for this CVE.

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

Publicly available exploits

(7 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoC4dp/CVE-2021-1732
    First seen Mar 9, 2023

    CVE-­2021­-1732 Microsoft Windows 10 本地提权漏 研究及Poc/Exploit开发

    Open source ↗
  • GitHub PoCfenalik/CVE-2021-1732
    First seen Nov 1, 2022

    CVE-­2021­-1732 Microsoft Windows 10 本地提权漏 研究及Poc/Exploit开发

    Open source ↗
  • GitHub PoCexploitblizzard/Windows-Privilege-Escalation-CVE-2021-1732
    First seen Apr 25, 2021

    Read my blog for more info -

    Open source ↗
  • GitHub PoCPai-Po/CVE-2021-1732
    First seen Apr 23, 2021

    CVE-2021-1732 poc & exp; tested on 20H2

    Open source ↗
  • GitHub PoClinuxdy/CVE-2021-1732_exp
    First seen Apr 2, 2021
    Open source ↗
  • GitHub PoCKaLendsi/CVE-2021-1732-Exploit
    First seen Mar 5, 2021

    CVE-2021-1732 Exploit

    Open source ↗
  • Metasploitexploit/windows/local/cve_2022_21882_win32k✓ verified
    First seen Feb 9, 2021

    Win32k ConsoleControl Offset Confusion

    Open source ↗

Frequently asked(6)

What is CVE-2021-1732?
CVE-2021-1732 is a critical vulnerability published on February 25, 2021. Windows Win32k Elevation of Privilege Vulnerability
When was CVE-2021-1732 disclosed?
CVE-2021-1732 was first published in the National Vulnerability Database on February 25, 2021, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-1732 actively exploited?
Yes. CISA added CVE-2021-1732 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Win32k. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2021-1732?
CVE-2021-1732 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-2021-1732?
CVE-2021-1732 affects Microsoft Win32k. 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-2021-1732?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-1732, 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

Explore the affected products and dependency analysis for CVE-2021-1732

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