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CVE-2006-4177

20
FAUCET Score

CVE-2006-4177 describes a heap-based buffer overflow in the NCP engine of Novell eDirectory versions prior to 8.8.1 FTF1. This vulnerability allows remote attackers to execute arbitrary code by sending a specially crafted NCP over IP packet, leading the NCP engine to process more data than its allocated buffer. The vulnerability has a CVSS score of 7.5, indicating high severity due to its network-based attack vector, low attack complexity, and potential for partial confidentiality, integrity, and availability impacts. Attackers do not require authentication to exploit this flaw. Despite its age and severity, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are also minimal, suggesting it has not garnered significant attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.8.1CPE matchmatch criteria
cpe:2.3:a:novell:edirectory:*:*:*:*:*:*:*:*
8.8CPE matchmatch criteria
cpe:2.3:a:novell:edirectory:8.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.86%
Probability of exploitation in next 30 days
EPSS Percentile
89.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0386 is in the 81st percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

labs.idefense.com / intelligence/vulnerabilities/display.php
PatchVendor Advisory
secunia.com / advisories/22506
PatchVendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/29768
support.novell.com / cgi-bin/search/searchtid.cgi
Patch
securityfocus.com / bid/20664
vupen.com / english/advisories/2006/4142