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CVE-2006-4138

40
FAUCET Score

CVE-2006-4138 describes multiple unspecified vulnerabilities in the Microsoft Windows Help File viewer (winhlp32.exe) that allow user-assisted attackers to execute arbitrary code through specially crafted HLP files. With a CVSS score of 7.6, this vulnerability is considered highly severe, indicating a network-based attack with high impact on confidentiality, integrity, and availability, albeit with high attack complexity. While there is no evidence of active exploitation in the wild or KEV listing, an exploit is publicly available on ExploitDB. Despite its age and high FAUCET risk score of 98/100, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:help_file_viewer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.6HIGH

AV:N/AC:H/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
20.10%
Probability of exploitation in next 30 days
EPSS Percentile
97.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-28381 · Aug 12, 2006
This CVE's current EPSS score of 0.2010 is in the 86th 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

securityreason.com / securityalert/1382
securityfocus.com / archive/1/443034/100/0/threaded
securityfocus.com / archive/1/443039/100/0/threaded
securityfocus.com / bid/19490
Exploit