CVE DATABASE / CVE-2009-1123
CVE-2009-1123
Microsoft Windows Improper Input Validation Vulnerability
Confirmed exploited in the wild. Added 2022-03-03.
Federal remediation due 2022-03-24.
Required action: Apply updates per vendor instructions.
Summary
The kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly validate changes to unspecified kernel objects, which allows local users to gain privileges via a crafted application, aka "Windows Kernel Desktop Vulnerability."
CVSS 3.1 breakdown
| Base score | 7.8 (HIGH) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- http://osvdb.org/54940
- http://secunia.com/advisories/35372
- http://www.securitytracker.com/id?1022359
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.vupen.com/english/advisories/2009/1544
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-025
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6206
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-1123
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.