CVE-2026-4434
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Improper Certificate Validation in PAM WinRM Enables MitM Attack

Publication date: 2026-03-20

Last updated on: 2026-03-30

Assigner: Devolutions Inc.

Description
Improper certificate validation in the PAM propagation WinRM connections allows a network attacker to perform a man-in-the-middle attack via disabled TLS certificate verification.
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Meta Information
Published
2026-03-20
Last Modified
2026-03-30
Generated
2026-06-16
AI Q&A
2026-03-20
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4434
EUVD
EUVD-2026-13688
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
devolutions devolutions_server to 2026.1.6.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-295 The product does not validate, or incorrectly validates, a certificate.
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Executive Summary

This vulnerability involves improper certificate validation in the PAM propagation WinRM connections. Specifically, TLS certificate verification is disabled, which allows a network attacker to perform a man-in-the-middle (MITM) attack.

Impact Analysis

Because TLS certificate verification is disabled, an attacker on the network can intercept and potentially alter communications between systems using PAM propagation WinRM connections. This could lead to unauthorized access, data interception, or manipulation.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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