CVE-2012-2539

CVE-2012-2539 is a high-severity (CVSS 7.8) vulnerability in Microsoft Word. CISA added it to the Known Exploited Vulnerabilities catalog on March 28, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 18, 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 Word 2003 SP3, 2007 SP2 and SP3, and 2010 SP1; Word Viewer; Office Compatibility Pack SP2 and SP3; and Office Web Apps 2010 SP1 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted RTF data, aka "Word RTF 'listoverridecount' Remote Code Execution Vulnerability."

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

• http://www.us-cert.gov/cas/techalerts/TA12-346A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073
• http://www.us-cert.gov/cas/techalerts/TA12-346A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-2539