What is CVE-2026-12105?

CVE-2026-12105 is a medium-severity vulnerability in Devolutions Server, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-06-16.

How severe is CVE-2026-12105?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Devolutions Server

CVE-2026-12105

Improper access control in Devolutions Server 2026.2.5, 2026.1.21 allows an authenticated user to access attachments via folder duplication with inherited permissions.

Vulnerability class: Broken Access Control

Published 2026-06-16 · last modified 2026-06-18.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Devolutions Server — versions 0
Devolutions Server

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

devolutions.net/security/advisories/DEVO-2026-0017/ (Vendor Advisory)

Frequently asked questions

What is CVE-2026-12105?: CVE-2026-12105 is a medium-severity vulnerability in Devolutions Server, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-06-16.
How severe is CVE-2026-12105?: Medium severity. CVSS v3 base score is 6.5 out of 10.