CVE-2026-1731 CISA KEV — actively exploited Ransomware-linked

BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability

BeyondTrust — Remote Support(RS) & 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.

CVSS scoreCritical

9.9

EPSS — exploitation probabilityHigh

88.1%

Vector breakdown

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: None
User interaction: None
Confidentiality (Vulnerable System): High
Integrity (Vulnerable System): High
Availability (Vulnerable System): High
Confidentiality (Subsequent System): Low
Integrity (Subsequent System): High
Availability (Subsequent System): Low

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:H/SA:L

Published: Feb 6, 2026
Modified: Feb 26, 2026
Added to KEV: Feb 13, 2026
Federal patch due: Feb 16, 2026

CISA required action

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 classification

CWE-78Improper Neutralization of Special Elements used in an OS Command

Proof-of-concept & exploitation references

Weaponization

Nuclei template

Not found

Metasploit module

Not found

Public repositories whose name or description references CVE-2026-1731, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.

No public GitHub repositories referencing CVE-2026-1731 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.

References

Frequently asked questions

What is CVE-2026-1731?

How severe is CVE-2026-1731?

CVE-2026-1731 has a CVSS base score of 9.9 out of 10 (CVSS 4.0).

Is CVE-2026-1731 actively exploited in the wild?

Yes. CVE-2026-1731 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Feb 13, 2026, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.

What is the EPSS score for CVE-2026-1731?

88.1% - meaning FIRST.org's EPSS model estimates a 88.1% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).

What type of vulnerability is CVE-2026-1731?

CVE-2026-1731 is classified under CWE-78 (CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).

Cross-checked against

Impactr finds and proves whether CVE-2026-1731 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.

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