CVE-2025-20345 json
Cisco Duo Authentication Proxy Information Disclosure Vulnerability
published 2025-08-20 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-25387
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
A vulnerability in the debug logging function of Cisco Duo Authentication Proxy could allow an authenticated, high-privileged, remote attacker to view sensitive information in a system log file.
This vulnerability is due to insufficient masking of sensitive information before it is written to system log files. An attacker could exploit this vulnerability by accessing logs on an affected system. A successful exploit could allow the attacker to view sensitive information that should be restricted.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 14 mo ago
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Cisco Cisco Duo Authentication Proxy
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
- sec.cloudapps.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-authproxlog-SxczXQ63
- bst.cloudapps.cisco.com /bugsearch/bug/CSCvd36820
- sec.cloudapps.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2
- sec.cloudapps.cisco.com /security/center/viewErp.x?alertId=ERP-66682
Sources
- CVE List CVE-2025-20345
- NVD CVE-2025-20345
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