CVE-2025-59270: psPAS does not enforce TLS 1.2 within Get-PASSAMLResponse

Severity: low (CVSS 3.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-16 · updated 2026-06-17
Weakness: CWE-757

Description

psPAS PowerShell module does not explicitly enforce TLS 1.2 within the 'Get-PASSAMLResponse' function during the SAML authentication process. An unauthenticated attacker in a 'Man-in-the-Middle' position could manipulate the TLS handshake and downgrade TLS to a deprecated protocol. Fixed in 7.0.209.

Affected products

pspete psPAS: from 6.4.85 before 7.0.209 — fixed in 7.0.209

How to fix

Upgrade to a fixed version: pspete psPAS 7.0.209. Check the vendor advisory for mitigations.

References

https://github.com/pspete/psPAS/commit/2a8b1b4bc001bec9969ea512ed83386ed3e0b8f8#diff-e40bf02e86c8a8babbb20529ecaef6a069d8b5ea21701dca429dce78181109a7L37-R75
https://github.com/pspete/psPAS/releases/tag/v7.0.209
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-258-01.json
https://www.cve.org/CVERecord?id=CVE-2025-59270

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