CVE-2006-0561

CVE-2006-0561 is a high-severity vulnerability in Cisco Secure Access Control Server with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2006-0561?
CVE-2006-0561 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2006-0561 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0561?
CVE-2006-0561 primarily affects Cisco Secure Access Control Server. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0561?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-0561 published?
CVE-2006-0561 was published on 2006-05-10 and last updated on 2026-06-16.

References

Affected products (8)

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