Sensitive-data disclosure via unmasked debug logging
Published Aug 20, 2025 · Updated Aug 20, 2025
Information disclosure in Cisco Duo Authentication Proxy 6.5.1 and earlier allows remote authenticated users to read sensitive log data. The debug logger fails to mask sensitive values before writing LDAP or Active Directory password-change activity to authproxy.log. Exploitation requires high-privileged access to system logs, debug-level logging, and a configuration that permits the affected password-change operations.
Summary
What happened
Information disclosure in Cisco Duo Authentication Proxy 6.5.1 and earlier allows remote authenticated users to read sensitive log data. The debug logger fails to mask sensitive values before writing LDAP or Active Directory password-change activity to authproxy.log. Exploitation requires high-privileged access to system logs, debug-level logging, and a configuration that permits the affected password-change operations.
The record
- CVE
- CVE-2025-20345
- Published
- Aug 20, 2025
- Updated
- Aug 20, 2025
- Vendor
- ClamAV
- Product
- Cisco Duo Authentication Proxy
- Classifications
- CWE-200, T1005
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Aug 20, 2025CVE publishedPublication date reported by the CVE source.
- Aug 20, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.10.0
- Affected versionversion=2.10.1
- Affected versionversion=2.11.0
- Affected versionversion=2.12.0
- Affected versionversion=2.12.1
- Affected versionversion=2.13.0
- Affected versionversion=2.14.0
- Affected versionversion=2.4.10
- Affected versionversion=2.4.11
- Affected versionversion=2.4.12
- Affected versionversion=2.4.13
- Affected versionversion=2.4.14
- Affected versionversion=2.4.14.1
- Affected versionversion=2.4.15
- Affected versionversion=2.4.16
- Affected versionversion=2.4.17
- Affected versionversion=2.4.18
- Affected versionversion=2.4.19
- Affected versionversion=2.4.2
- Affected versionversion=2.4.20
- Affected versionversion=2.4.21
- Affected versionversion=2.4.3
- Affected versionversion=2.4.4
- Affected versionversion=2.4.5
- Affected versionversion=2.4.6
- Affected versionversion=2.4.7
- Affected versionversion=2.4.8
- Affected versionversion=2.4.9
- Affected versionversion=2.5.4
- Affected versionversion=2.6.0
- Affected versionversion=2.7.0
- Affected versionversion=2.8.1
- Affected versionversion=2.9.0
- Affected versionversion=3.0.0
- Affected versionversion=3.1.0
- Affected versionversion=3.1.1
- Affected versionversion=3.2.0
- Affected versionversion=3.2.1
- Affected versionversion=3.2.2
- Affected versionversion=3.2.3
- Affected versionversion=3.2.4
- Affected versionversion=4.0.0
- Affected versionversion=4.0.1
- Affected versionversion=4.0.2
- Affected versionversion=5.0.0
- Affected versionversion=5.0.1
- Affected versionversion=5.0.2
- Affected versionversion=5.1.0
- Affected versionversion=5.1.1
- Affected versionversion=5.2.0
- Affected versionversion=5.2.1
- Affected versionversion=5.2.2
- Affected versionversion=5.3.0
- Affected versionversion=5.3.1
- Affected versionversion=5.4.0
- Affected versionversion=5.4.1
- Affected versionversion=5.5.0
- Affected versionversion=5.5.1
- Affected versionversion=5.6.0
- Affected versionversion=5.6.1
- Affected versionversion=5.7.0
- Affected versionversion=5.7.1
- Affected versionversion=5.7.2
- Affected versionversion=5.7.3
- Affected versionversion=5.7.4
- Affected versionversion=5.8.0
- Affected versionversion=5.8.1
- Affected versionversion=6.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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