CVE-2026-40139
Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
CRITICAL 9.2
At a glance
- Source
- NVD
- EPSS
- EPSS 0.75 % · percentile 55 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- BT
- NVD status
- Analyzed
Description
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.
Weaknesses (CWE)
- CWE-287 — Improper Authentication
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | BT |
| CVSS 4.0 | CRITICAL 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · 13061848-ea10-403d-bd75-c83a022c2891 (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-41887
- GCVE · GCVE-0-2026-40139
Affected configurations (NVD CPE)
cpe:2.3:a:beyondtrust:privileged_remote_access:*:*:*:*:*:*:*:*< 25.3.3cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:*< 25.3.3
Affected products
| Product | Versions |
|---|---|
| BeyondTrust · Remote Support | affected 0 ≤ 25.3.2 |
| BeyondTrust · Privileged Remote Access | affected 0 ≤ 25.3.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |