Is CVE-2006-4521 being actively exploited?

CVE-2006-4521 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-4521?

CVE-2006-4521 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2006-4521

MEDIUM · CVSS 5.0EPSS 1.8%EU EUVD

The BerDecodeLoginDataRequest function in the libnmasldap.so NMAS module in Novell eDirectory 8.8 and 8.8.1 before the Security Services 2.0.3 patch does not properly increment a pointer when handling certain input, which allows remote attackers to cause a denial of service (invalid memory access) via a crafted login request.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS score: 1.8% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-4509)
Published: November 4, 2006
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-4509 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

novell / edirectory
novell / edirectory

References

http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=437(Patch, Vendor Advisory)
http://secunia.com/advisories/22660(Patch, Vendor Advisory)
http://securitytracker.com/id?1017140(Patch)
http://www.securityfocus.com/bid/20842
http://www.vupen.com/english/advisories/2006/4293
https://exchange.xforce.ibmcloud.com/vulnerabilities/29963

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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