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PatchSiren cyber security CVE debrief

CVE-2026-12105 Devolutions CVE debrief

CVE-2026-12105 is an improper access control vulnerability in Devolutions Server versions 2026.2.5 and 2026.1.21. An authenticated user can exploit this vulnerability to access attachments by duplicating a folder and inheriting permissions.

Vendor
Devolutions
Product
Devolutions Server
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-16
Original CVE updated
2026-06-18
Advisory published
2026-06-16
Advisory updated
2026-06-18

Who should care

Users of Devolutions Server versions 2026.2.5 and 2026.1.21 should apply patches or mitigations to prevent unauthorized access to attachments.

Technical summary

The vulnerability allows an authenticated user to access attachments via folder duplication with inherited permissions in Devolutions Server 2026.2.5 and 2026.1.21.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by Devolutions to fix the vulnerability.
  • Restrict access to sensitive attachments and folders.
  • Monitor server logs for suspicious activity.

Evidence notes

The CVE record and NVD detail can be found at [cve-org] and [nvd], respectively. Additional information is available at [ref-4].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12105 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12105

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-12105 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12105

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.