High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
Priority MEDIUM 45CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
BeyondTrust Remote Support and Privileged Remote Access contain a high-severity pre-authentication vulnerability in the network communication subsystem. Insufficient validation of client-supplied input may allow an unauthenticated remote attacker to trigger a denial-of-service condition affecting appliance availability.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00648 51st 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
- Yes
- Technical impact
- Partial
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-2026-40140
- 2026-10-03 Alias added: GHSA-8v46-5p7g-p46j
- 2026-10-18 EPSS moved to the 50th–90th percentile
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-2026-28958 Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access CVSS 4.0CRITICAL 9.2
Sources
- CVE-2026-40140 · CVE Program
- CVE-2026-40140 · NVD
- FIRST EPSS
- GHSA-8v46-5p7g-p46j · 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