CVE-2006-0561

Cisco Secure Access Control Server (ACS) 3.x for Windows stores ACS administrator passwords and the master key in the registry with insecure permissions, which allows local users and remote administrators to decrypt the passwords by using Microsoft's cryptographic API functions to obtain the plaintext version of the master key.

Published: 2006-05-10 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-0561 is rated Low Risk (33/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-0561

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.06% 0.05% -0.01%
2 2025-03-29 0.04% 0.06% +0.01%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-0561

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2006-0561

NVD evaluator notes for CVE-2006-0561

Solution: This vulnerability is addressed in the following product release: Cisco, Secure Access Control Server, 4.0.1

Affected software / configurations for CVE-2006-0561

Vendor Product Version Raw CPE
cisco secure_access_control_server 3.0 cpe:2.3:a:cisco:secure_access_control_server:3.0:*:windows_nt:*:*:*:*:*
cisco secure_access_control_server 3.0.1 cpe:2.3:a:cisco:secure_access_control_server:3.0.1:*:windows_nt:*:*:*:*:*
cisco secure_access_control_server 3.0.3 cpe:2.3:a:cisco:secure_access_control_server:3.0.3:*:windows_nt:*:*:*:*:*
cisco secure_access_control_server 3.1 cpe:2.3:a:cisco:secure_access_control_server:3.1:*:windows_nt:*:*:*:*:*
cisco secure_access_control_server 3.1.1 cpe:2.3:a:cisco:secure_access_control_server:3.1.1:*:windows_nt:*:*:*:*:*
cisco secure_access_control_server 3.2 cpe:2.3:a:cisco:secure_access_control_server:3.2:*:windows_nt:*:*:*:*:*
cisco secure_access_control_server 3.2 cpe:2.3:a:cisco:secure_access_control_server:3.2:*:windows_server:*:*:*:*:*
cisco secure_access_control_server 3.3 cpe:2.3:a:cisco:secure_access_control_server:3.3:*:windows_nt:*:*:*:*:*

References for CVE-2006-0561

cvelogic Threat Intelligence