CVE-2026-12755

Improper input validation in the PAM AD discovery endpoints in Devolutions Server 2026.2.4.0 through 2026.2.7.0 allows an authenticated user with the UserGroupsView permission to coerce server-side authentication to an attacker-controlled host, exposing PAM provider credentials as a NTLMv2 challenge-response, via a crafted DomainName parameter.

Published: 2026-06-25 Last update: 2026-06-29 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-12755 is rated Low Risk (15/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.22%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-12755

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-26 — 0.22% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-12755

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.7 3.1 LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-12755

GitHub Security Advisory for CVE-2026-12755

GHSA-6vpw-rmvh-qc2w · Severity: low — Improper input validation in the PAM AD discovery endpoints in Devolutions Server 2026.2.4.0...

Affected software / configurations for CVE-2026-12755

Vendor Product Version Raw CPE
devolutions devolutions_server >= 2026.2.4.0, < 2026.2.9.0 cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:*

References for CVE-2026-12755

cvelogic Threat Intelligence