Microsoft · Windows
CVE-2010-4398
Microsoft Windows Kernel Stack-Based Buffer Overflow Vulnerability
What it is
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."
CISA: Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows allows local users to gain privileges, and bypass the User Account Control (UAC) feature.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: April 21, 2022
- Added to the CISA list
- March 28, 2022
- Published
- December 3, 2010
- Severity
- High 7.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 8.7% in the top 4.9% of all known vulnerabilities
- Weakness
- CWE-119
- More details
- NVD · CVE.org · CISA
All references (13)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-011
- http://isc.sans.edu/diary.html?storyid=9988
- http://www.securityfocus.com/bid/45045
- http://www.exploit-db.com/exploits/15609/
- http://nakedsecurity.sophos.com/2010/11/25/new-windows-zero-day-flaw-bypasses-uac/
- http://support.avaya.com/css/P8/documents/100127248
- http://www.vupen.com/english/advisories/2011/0324
- http://www.exploit-db.com/bypassing-uac-with-user-privilege-under-windows-vista7-mirror/
- http://twitter.com/msftsecresponse/statuses/7590788200402945
- http://www.securitytracker.com/id?1025046
- http://www.kb.cert.org/vuls/id/529673
- http://secunia.com/advisories/42356
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12162
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Oct 13, 2026 | Command Injection | Windows | High 8.8 | 9.8% |
| Sep 8, 2026 | Link Following | Windows | High 7.8 | 0.4% |
| Sep 8, 2026 | Heap-Based Buffer Overflow | Windows | High 7.8 | 0.4% |
| May 20, 2026 | Buffer Overflow | Windows | Critical 9.8 | 99% |
| Apr 28, 2026 | Protection Mechanism Failure | Windows | Medium 4.3 | 71% |
| Apr 13, 2026 | Out-of-Bounds Read | Windows | High 7.8 | 12% |
| Apr 13, 2026 | Link Following | Windows | High 7.8 | 4.6% |
| Feb 17, 2026 | Microsoft Windows Video ActiveX Control Remote Code Execution | Windows | High 8.8 | 77% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.