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CVE-2011-0105

84
FAUCET Score

CVE-2011-0105 is a critical buffer overflow vulnerability affecting Microsoft Excel 2002 SP3, Office 2004/2008 for Mac, and Open XML File Format Converter for Mac, allowing remote attackers to execute arbitrary code via a crafted Excel file due to improper memory initialization. With a CVSS score of 9.3 and an EPSS score of 0.894, this vulnerability presents a severe risk, enabling complete compromise of confidentiality, integrity, and availability with medium attack complexity. While not on the KEV catalog or Hot List, exploit code exists within Metasploit (MS11-021), indicating readily available tools for exploitation, despite a lack of broader community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2002CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2002: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
71.27%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: MS11-021 Microsoft Office 2007 Excel .xlb Buffer Overflow · Aug 9, 2011
ExploitDB: EDB-18087 · Nov 5, 2011
This CVE's current EPSS score of 0.7127 is in the 99th percentile among its peer group of 8,914 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 0.1 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/ms11-021
secunia.com / advisories/39122
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12618
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-102A.html
US Government Resource
vupen.com / english/advisories/2011/0940