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CVE-2015-6177

29
FAUCET Score

CVE-2015-6177 is a critical memory corruption vulnerability affecting Microsoft Excel 2007 SP3, Office Compatibility Pack SP3, and Excel Viewer. This flaw allows remote attackers to execute arbitrary code on a vulnerable system by enticing a user to open a specially crafted Office document. With a CVSS score of 9.3, it represents a high-severity risk, requiring user interaction (AC:M) but no authentication (Au:N) for a network-based attack (AV:N) that could lead to complete compromise of confidentiality, integrity, and availability (C:C/I:C/A:C). Despite its high severity and FAUCET Risk Score of 97/100, there is no evidence of active exploitation, publicly available exploit code in Metasploit or ExploitDB, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:excel:2007:sp3:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:excel_viewer:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:office_compatibility_pack:*:sp3:*:*:*:*:*:*

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
13.60%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1360 is in the 79th percentile among its peer group of 8,918 CVEs.

Social Chatter

No social media mentions found for this CVE.

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/2015/ms15-131
securitytracker.com / id/1034324