Is this vulnerability remotely exploitable over the internet?

Yes, if the BeyondTrust RS or PRA instance is reachable over the network (including the internet) on the vulnerable interface, an attacker can exploit it remotely without prior authentication.

Does an attacker need valid credentials or user accounts?

No. This is a pre-authentication issue, so the attacker does not need credentials or an existing account; they only need network access to the affected service.

What is the safest general fix pattern for developers?

The safest pattern is to remove all string-based shell or OS command construction from request-handling code, especially before authentication, and to use high-level, parameterized APIs that cannot interpret user input as executable commands. If system calls are necessary, arguments should be passed as structured parameters, not concatenated strings.

Severity:

CRITICAL RISK

(9.8)

OS Command Injection (CWE-78) in BeyondTrust Remote Support and Privileged Remote Access

CVE-2026-1731

Published:

Feb 6, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Pre-authentication Remote Code Execution

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Pre-authentication Remote Code Execution

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

OS Command Injection (CWE-78) in BeyondTrust Remote Support and Privileged Remote Access

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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