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Vulnerabilities

Vulnerability · CVE-2012-2539

Microsoft Word Remote Code Execution Vulnerability

Published Dec 11, 2012 · catalog updated Jun 16, 2026 · Microsoft Word

Patch now

CVE-2012-2539 is in the CISA known-exploited catalog, due Apr 18, 2022. Confirm Microsoft Word against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
53.03%
Remediation
Remediation guidance
Affected products
cpe microsoft/office compatibility pack · cpe microsoft/office web apps · cpe microsoft/office word viewer · cpe microsoft/sharepoint server · cpe microsoft/word · vendor Microsoft Word

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."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/office compatibility packversion unspecified
  • cpe microsoft/office web apps2010
  • cpe microsoft/office word viewerversion unspecified
  • cpe microsoft/sharepoint server2010
  • cpe microsoft/word2003
  • cpe microsoft/word2007
  • vendor Microsoft Wordversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2012-2539

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2012-2539 is in the CISA known-exploited catalog, due Apr 18, 2022. Confirm Microsoft Word against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/office web apps 2010; microsoft/sharepoint server 2010. Apply updates per vendor instructions.

What should an analyst verify?

CWE-399; CWE-787: Out-of-bounds Write. EPSS 53.03%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 11, 2012 · Catalog

    Detected

    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."

  2. Mar 28, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 18, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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."

Sources

  • CISA KEVConfirmed exploitationCVE-2012-2539

    Microsoft Word allows attackers to execute remote code or cause a denial-of-service (DoS) via crafted RTF data.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2012-2539

    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 'listove

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2012-2539

    30-day exploitation probability 53.0%

    first.org
  • NIST NVDVulnerability recordCVE-2012-2539

    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 'listove

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2012-2539

    Microsoft Word allows attackers to execute remote code or cause a denial-of-service (DoS) via crafted RTF data.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.