CVE-2026-1731
BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 16 February 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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 4.0
- 9.9 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 93.10% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 13 February 2026 · due 16 February 2026 · used in ransomware campaigns
- Weakness
- CWE-78
- Affected
- beyondtrust/privileged remote access · beyondtrust/remote support
- Source
- 13061848-ea10-403d-bd75-c83a022c2891
EPSS moved from 90.7% on 24 September 2026 to 93.1% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Please adhere to the vendor's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible BeyondTrust products affected by this vulnerability. For more information please: see: https://www.beyondtrust.com/trust-center/security-advisories/bt26-02 ; https://nvd.nist.gov/vuln/detail/CVE-2026-1731
References
- https://beyondtrustcorp.service-now.com/csm?id=csm_kb_article&sysparm_article=KB0023293Permissions Required
- https://www.beyondtrust.com/trust-center/security-advisories/bt26-02Vendor Advisory
- https://github.com/win3zz/CVE-2026-1731Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-1731US Government Resource
- https://www.greynoise.io/blog/reconnaissance-beyondtrust-rce-cve-2026-1731Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.