Is CVE-2006-6981 being actively exploited?

CVE-2006-6981 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-6981?

CVE-2006-6981 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2006-6981

MEDIUM · CVSS 5.0EPSS 1.3%EU EUVD

3proxy 0.5 to 0.5.2, when NT-encoded passwords are being used, allows remote attackers to cause a denial of service (blocked account) via unspecified vectors related to NTLM authentication, which causes a password hash to be overwritten.

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: 1.3% (71th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-6963)
Published: February 8, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-6963 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

3proxy / 3proxy
3proxy / 3proxy
3proxy / 3proxy

References

http://3proxy.ru/0.5.3g/Changelog.txt(Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/38201

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

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