CVE-2010-4398

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 2022-03-28), 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 — 4 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: 9%CVSS: 7.8Exploit: NoneExposed: 0

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

Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the User Account Control (UAC) feature, via a crafted REG_BINARY value for a SystemDefaultEUDCFont registry key, aka "Driver Improper Interaction with Windows Kernel Vulnerability."

CVSS v3
7.8
EG Score
9.0(high)
EPSS
94.6%
KEV
⚠ Exploited

Published

December 6, 2010

Last Modified

April 21, 2026

Advisory Details (6)

Auto-updated May 19, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: cert.
generic
http://www.securitytracker.com/id?1025046
generic
http://www.securityfocus.com/bid/45045
cert

VU#529673 - Microsoft Windows RtlQueryRegistryValues() does not adequately validate registry data

http://www.kb.cert.org/vuls/id/529673
generic🟡 PoC Available

Microsoft Windows Vista/7 - Local Privilege Escalation (UAC Bypass) - Windows local Exploit

http://www.exploit-db.com/exploits/15609/
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42356
generic🟡 PoC Available

Privilege escalation 0-day in almost all Windows versions

http://isc.sans.edu/diary.html?storyid=9988

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 54× in last 7d / 214× 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 425 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-15609✓ verified
    First seen Nov 24, 2010

    Microsoft Windows Vista/7 - Local Privilege Escalation (UAC Bypass)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2010-4398?
CVE-2010-4398 is a high vulnerability published on December 6, 2010. Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the User Account Control…
When was CVE-2010-4398 disclosed?
CVE-2010-4398 was first published in the National Vulnerability Database on December 6, 2010, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2010-4398 actively exploited?
Yes. CISA added CVE-2010-4398 to the Known Exploited Vulnerabilities catalog on March 28, 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-2010-4398?
CVE-2010-4398 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-2010-4398?
CVE-2010-4398 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-2010-4398?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-4398, 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-2010-4398

Explore →

Is Your Infrastructure Affected by CVE-2010-4398?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs