BeyondTrust RS Check: Pre-Auth RCE via Crafted Requests
CVE-2026-1731 Published on February 6, 2026
Remote code execution vulnerability in BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA)
BeyondTrust Remote Support (RS) and certain older versions of Privileged Remote Access (PRA) contain a critical pre-authentication remote code execution vulnerability. By sending specially crafted requests, an unauthenticated remote attacker may be able to execute operating system commands in the context of the site user.
Known Exploited Vulnerability
This BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerabilit vulnerability is part of CISA's list of Known Exploited Vulnerabilities. BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA)contain an OS command injection vulnerability. Successful exploitation could allow an unauthenticated remote attacker to execute operating system commands in the context of the site user. Successful exploitation requires no authentication or user interaction and may lead to system compromise, including unauthorized access, data exfiltration, and service disruption.
The following remediation steps are recommended / required by February 16, 2026: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness Type
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2026-1731 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2026-1731
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Affected Versions
BeyondTrust Remote Support(RS) & Privileged Remote Access(PRA):- Before and including RS 25.3.1 is affected.
- Before and including PRA 24.3.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.