Authentication bypass in Devolutions Server device authorization flow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-294.
Summary
Devolutions Server before 2026.3.8 has an authentication bypass in its OAuth device authorization flow, classified as CWE-294. A remote attacker who captures a device verification link can replay it to take over a user's account after an authenticated victim interacts with it.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Authentication bypass OAuth device authorization flow in Devolutions Server 2026.3.7.0 and earlier allows a remote attacker to take over a user's account via replay of a captured device verification link by an authenticated victim.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Devolutions | Server | before 2026.3.8 | 2026.3.8 | Patch available | CNA |
- Server VendorDevolutions Affected before 2026.3.8 Fixed in 2026.3.8 Patch available CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:* | — | — | Devolutions |
- cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:* Versions — — ·Devolutions
Remediation
Devolutions Server 2026.3.8 fixes the flaw, so upgrade to that version.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Server (Devolutions) Fixed in 2026.3.8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Devolutions Server 2026.3.8
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2026-68602 Missing authorization in Devolutions Server global vaultPriority LOW 31
- TI-2026-68494 Authentication bypass in Devolutions Server Azure AD login flowPriority LOW 31
Timeline
- 2026-10-06 Threatist record created from CVE-2026-105485
- 2026-10-07 Alias added: GHSA-h4fx-378p-mcpj
References
More Devolutions vulnerabilities
- TI-2026-02787 Improper authentication in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2026-02768 Improper input validation in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2024-02729 Missing authentication in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2023-06040 Incorrect permission assignment in Devolutions Remote Desktop Manager CVSS 3.1CRITICAL 9.8
- TI-2023-04041 Improper authentication in Devolutions Remote Desktop Manager CVSS 3.1CRITICAL 9.8
- TI-2026-02702 Improper Enforcement of Behavioral Controls in Devolutions Server 2025.3.15 and earlier… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-105485 · CVE Program
- CVE-2026-105485 · NVD
- FIRST EPSS
- GHSA-h4fx-378p-mcpj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences