CVE-2009-1123

CVE-2009-1123 is a high-severity (CVSS 7.8) vulnerability in Microsoft Windows. CISA added it to the Known Exploited Vulnerabilities catalog on March 3, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 24, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

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 vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

• 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
• http://osvdb.org/54940