CVE-2012-2539Microsoft 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 d…
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It affects microsoft office_compatibility_pack and 4 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 28, 2022; federal agencies had to remediate by Apr 18, 2022. Treat that date as your deadline.
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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
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Added to CISA KEV Mar 28, 2022; federal remediation due Apr 18, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 53.03% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 22, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft office_compatibility_pack microsoft:office_compatibility_pack | all versions; all versions | NVD |
microsoft office_web_apps microsoft:office_web_apps | 2010 | NVD |
microsoft office_word_viewer microsoft:office_word_viewer | all versions | NVD |
microsoft sharepoint_server microsoft:sharepoint_server | 2010 | NVD |
microsoft word microsoft:word | 2003; 2007; 2007; 2010 | NVD |
References
- http://www.us-cert.gov/cas/techalerts/TA12-346A.htmlthird-party-advisory, x-refsource-cert, us-government-resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-079vendor-advisory, x-refsource-ms, patch
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073vdb-entry, signature, x-refsource-oval, broken-link
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-2539us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.