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

August 12, 2026

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 104× in last 7d / 423× 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 1,531 total refreshes for this CVE.

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

Publicly available exploits

(8 references)

Working exploit code is in the public domain (1 Metasploit module) (7 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 PoCpo4sec/CVE-2021-1732
    First seen Apr 23, 2021

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

    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 ↗

Related CVEs(same CWE)

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 August 12, 2026. 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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