Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
Priority MEDIUM 43CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support. Improper processing of authentication requests may allow an unauthenticated remote attacker to bypass access controls and gain unauthorized access to the appliance, including accounts with elevated privileges. Exploitation requires a specific authentication configuration to be enabled.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00752 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| BeyondTrust | Remote Support | up to 25.3.2 | — | No fix listed | CNA |
| BeyondTrust | Privileged Remote Access | up to 25.3.2 | — | No fix listed | CNA |
- Remote Support VendorBeyondTrust Affected up to 25.3.2 Fixed in — No fix listed CNA
- Privileged Remote Access VendorBeyondTrust Affected up to 25.3.2 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:beyondtrust:privileged_remote_access:*:*:*:*:*:*:*:* | before 25.3.3 | Vulnerable | BeyondTrust |
| cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:* | before 25.3.3 | Vulnerable | BeyondTrust |
- cpe:2.3:a:beyondtrust:privileged_remote_access:*:*:*:*:*:*:*:* Versions before 25.3.3 Vulnerable ·BeyondTrust
- cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:* Versions before 25.3.3 Vulnerable ·BeyondTrust
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-40139
- 2026-10-03 Alias added: GHSA-5wv8-v74x-qrjc
References
More BeyondTrust Privileged Remote Access vulnerabilities
- TI-2026-01414 Remote code execution vulnerability in BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) KEVCVSS 4.0CRITICAL 9.9
- TI-2024-11463 Command Injection Vulnerability in Remote Support(RS) & Privileged Remote Access (PRA) KEVCVSS 3.1CRITICAL 9.8
- TI-2024-11765 Command Injection vulnerability in Remote Support(RS) & Privilege Remote Access (PRA) KEVCVSS 3.1HIGH 7.2
- TI-2023-09461 BeyondTrust Privileged Remote Access (PRA) versions 22.2.x to 22.4.x are vulnerable to a… CVSS 3.1HIGH 7.8
- TI-2023-03984 Command injection in BeyondTrust Privileged Remote Access CVSS 3.1CRITICAL 9.8
- TI-2026-28959 High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access CVSS 4.0HIGH 8.7
Sources
- CVE-2026-40139 · CVE Program
- CVE-2026-40139 · NVD
- FIRST EPSS
- GHSA-5wv8-v74x-qrjc · 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