CVE-2026-12755

Description

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.

CVSS v3.1 Score

2.7

LOW

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-1284 CWE-1284

Affected Products

Vendor	Product	Versions
devolutions	devolutions_server	2026.2.4.0 — 2026.2.9.0

References

Advisories & Patches

https://devolutions.net/security/advisories/DEVO-2026-0020/

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 2.7 (LOW).

How severe is CVE-2026-12755? +

CVE-2026-12755 has a CVSS v3.1 score of 2.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-12755? +

CVE-2026-12755 affects products from devolutions, specifically: devolutions_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-12755? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-41100

Incorrect authentication vulnerability in ParkingDoor. Through this vulnerability it is possible to operate the device without the access being logged …

CVE-2024-6768

A Denial of Service in CLFS.sys in Microsoft Windows 10, Windows 11, Windows Server 2016, Windows Server 2019, and Windows …

CVE-2025-8424

Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway when an attacker can get access …

CVE-2025-5808

Improper Input Validation vulnerability in OpenText Self Service Password Reset allows Authentication Bypass.This issue affects Self Service Password Reset from …

CVE-2025-9316

N-central < 2025.4 can generate sessionIDs for unauthenticated users This issue affects N-central: before 2025.4.

CVE-2025-48507

The security state of the calling processor into Trusted Firmware (TF-A) is not used and could potentially allow non-secure processors …