CVE-2026-4434 json
Improper certificate validation in the PAM propagation WinRM connections allows a network attacker to perform a man-in-the-middle attack vi…
published 2026-03-20 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-13688
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 3%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Devolutions Server 2026.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Devolutions Server
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
devolutions.net
/security/advisories/DEVO-2026-0005/
vendor-advisory
Sources
- CVE List CVE-2026-4434
- NVD CVE-2026-4434
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