CVE-2012-2539
KEVMicrosoft Word Remote Code Execution Vulnerability
Description
Microsoft Word allows attackers to execute remote code or cause a denial-of-service (DoS) via crafted RTF data.
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 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HPublishedDec 12, 2012
Last modifiedJun 16, 2026
Added to KEVMar 28, 2022
Remediation dueApr 18, 2022
References
- us-cert.gov/cas/techalerts/TA12-346A.htmlThird Party AdvisoryUS Government Resource
- docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079PatchVendor Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073Broken Link
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-2539US Government Resource
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74
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1653 days
- CVSS
- 7.8 HIGH
- EPSS (30-day exploit probability)
- 53.0% · top 1% of all CVEs
- Weakness
- CWE-787
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.