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CVE-2012-2539

86
FAUCET Score

CVE-2012-2539 is a critical memory corruption vulnerability affecting multiple versions of Microsoft Word, Word Viewer, Office Compatibility Pack, and Office Web Apps. It allows remote attackers to execute arbitrary code or cause a denial of service through specially crafted RTF data. With a CVSS score of 7.8 (High) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its potential for complete compromise of confidentiality, integrity, and availability. This flaw is actively exploited in the wild, as confirmed by its presence in the KEV catalog, and has garnered substantial community discussion, despite a lack of public exploit code on platforms like Metasploit or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:office_compatibility_pack:-:sp2:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:office_compatibility_pack:-:sp3:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:office_web_apps:2010:sp1:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:office_word_viewer:-:*:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2010:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
53.16%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 28, 2022
This CVE's current EPSS score of 0.5316 is in the 99th percentile among its peer group of 11,615 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
docs.microsoft.com / en-us/security-updates/securitybulletins/2012/ms12-079
PatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16073
Broken Link
us-cert.gov / cas/techalerts/TA12-346A.html
Third Party AdvisoryUS Government Resource