Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2011-0978

64
FAUCET Score

CVE-2011-0978 is a stack-based buffer overflow vulnerability affecting multiple versions of Microsoft Excel, Excel Viewer, and Office Compatibility Pack. This flaw, stemming from improper array indexing related to an axis properties record, allows unauthenticated remote attackers to execute arbitrary code. With a CVSS score of 9.3, it is a critical vulnerability requiring medium attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, a Proof-of-Concept exploit is publicly available on ExploitDB, and it has garnered some community discussion and media coverage, including a mention in a SecurityWeek article.

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:*:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2007:sp2:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:excel_viewer:-:sp2:*:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2004:*: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
42.56%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-17227 · Apr 29, 2011
This CVE's current EPSS score of 0.4256 is in the 97th 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

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

dvlabs.tippingpoint.com / blog/2011/02/07/zdi-disclosure-microsoft
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-021
secunia.com / advisories/39122
secunia.com / advisories/43232
securityreason.com / securityalert/8231
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12439
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-102A.html
US Government Resource
vupen.com / english/advisories/2011/0940
zerodayinitiative.com / advisories/ZDI-11-042