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CVE-2011-0098

43
FAUCET Score

CVE-2011-0098 is an integer signedness error affecting multiple versions of Microsoft Excel, Office for Mac, Excel Viewer, and the Office Compatibility Pack. This vulnerability allows remote attackers to execute arbitrary code by crafting a malicious XLS file with an oversized record, leading to a heap overflow. With a CVSS score of 9.3, it is considered critical due to its network-based attack vector, medium complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code is noted, and community discussion is minimal, its high FAUCET Risk Score indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:excel:-:-:x64:*:*:*:*:*
2002CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2002:sp3:*:*:*:*:*:*
2003CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2003:sp3:*:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2007:sp2:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:excel: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
30.50%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3050 is in the 93rd 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

osvdb.org / 71759
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-021
secunia.com / advisories/39122
Vendor Advisory
secunia.com / secunia_research/2011-32
Vendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12034
securityfocus.com / bid/47235
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-102A.html
US Government Resource
vupen.com / english/advisories/2011/0940
Vendor Advisory