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CVE-2011-1279

37
FAUCET Score

CVE-2011-1279 is a critical vulnerability affecting Microsoft Excel 2002 SP3, 2003 SP3, Office for Mac (2004, 2008), and Open XML File Format Converter for Mac. It stems from improper validation of record information during Excel spreadsheet parsing, allowing remote attackers to execute arbitrary code or cause a denial of service through memory corruption via a crafted spreadsheet. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but offering complete confidentiality, integrity, and availability impact. Despite its high severity and FAUCET Risk Score of 97/100, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2002CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2002:sp3:*:*:*:*:*:*
2003CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2003:sp3:*:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2004:*:mac:*:*:*:*:*
2008CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2008:*:mac:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:open_xml_file_format_converter:*:*:mac:*:*:*:*:*

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
16.97%
Probability of exploitation in next 30 days
EPSS Percentile
96.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1697 is in the 83rd percentile among its peer group of 8,918 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-045
exchange.xforce.ibmcloud.com / vulnerabilities/67717
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12373
securityfocus.com / bid/48164