CVE-2012-1889

CVE-2012-1889 is a high-severity (CVSS 8.8) vulnerability in Microsoft XML Core Services. CISA added it to the Known Exploited Vulnerabilities catalog on June 8, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 22, 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.

Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

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

• http://technet.microsoft.com/security/advisory/2719615
• http://www.us-cert.gov/cas/techalerts/TA12-174A.html
• http://www.us-cert.gov/cas/techalerts/TA12-192A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-043
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15195
• http://technet.microsoft.com/security/advisory/2719615
• http://www.us-cert.gov/cas/techalerts/TA12-174A.html
• http://www.us-cert.gov/cas/techalerts/TA12-192A.html