CVE-2026-1731: BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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.
Description quoted from the CVE record (assigned by BT, published 2026-02-06).
Weakness: CWE-78 Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’)
How it can be exploited
Exploitable over the network with low attack complexity with no special attack requirements needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. 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
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.
- On CISA KEV since
- 2026-02-13
- US federal deadline
- 2026-02-16
- Ransomware use
- Yes
Public exploit evidence (Exploit Observer)
Also known as: BDU:2026-03413, CNNVD-202602-911, EUVD-2026-5559, GHSA-p5wr-5p37-2wm6
VEDAS cluster: VEDAS:DRAGONMARINER
Exploit Observer links 12 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (12)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Nuclei template: https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/main/javascript/cves/2026/CVE-2026-1731.yaml
- Code repository: https://github.com/bytehazard/cve-2026-1731
- Code repository: https://github.com/cybrdude/cve-2026-1731-scanner
- Code repository: https://github.com/hex0user/cve-2026-1731
- Code repository: https://github.com/hexissam/cve-2026-1731
- Code repository: https://github.com/jakubie07/cve-2026-1731
- Code repository: https://github.com/lutfifakeexone/cve-2026-1731
- Code repository: https://github.com/richardpaimu34/cve-2026-1731
- Code repository: https://github.com/ridhinva/cve-2026-1731-beyondtrust-rce
- Code repository: https://github.com/win3zz/cve-2026-1731
- Code repository: https://github.com/z3r0h3ro/cve-2026-1731-exp
- Code repository: https://github.com/zensheii/cve-2026-1731-poc
Research and write-ups (5)
- Research or write-up: https://arcticwolf.com/resources/blog-uk/update-arctic-wolf-observes-threat-campaign-targeting-beyondtrust-remote-support-following-cve-2026-1731
- Research or write-up: https://attackerkb.com/topics/jNMBccstay/cve-2026-1731/rapid7-analysis
- Research or write-up: https://horizon3.ai/attack-research/vulnerabilities/cve-2026-1731/.
- Research or write-up: https://unit42.paloaltonetworks.com/beyondtrust-cve-2026-1731
- Research or write-up: https://www.greynoise.io/blog/reconnaissance-beyondtrust-rce-cve-2026-1731
Vulnerability databases and vendor advisories (6)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2026-5559
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-p5wr-5p37-2wm6
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-1731
- Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-1731
- Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202602-911
- Vulnerability database or vendor advisory: https://www.secpod.com/blog/weaponizing-cve-2026-1731-vshell-and-sparkrat-in-real-world-beyondtrust-breaches
News (2)
- News: https://deafnews.it/article/cve-2026-1731-cisa-conferma-sfruttamento-attivo-della-vulnerabilita-critica-beyondtrust
- News: https://securityaffairs.com/187962/uncategorized/attackers-exploit-beyondtrust-cve-2026-1731-within-hours-of-poc-release.html
43 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.939
very likely to be attacked soon - VEDAS
- 0.980
strong exploit evidence - On CISA KEV
- Yes, since 2026-02-13
- Detection rule
- None yet
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| BeyondTrust Remote Support(RS) & Privileged Remote Access(PRA) | up to and including RS 25.3.1 up to and including PRA 24.3.4 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
Exploit Observer also maps it to: beyondtrust privileged_remote_access, beyondtrust remote_support, beyondtrust_corporation privileged_remote_access, beyondtrust_corporation remote_support.
How to fix it
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.
Vendor guidance:
- https://www.beyondtrust.com/trust-center/security-advisories/bt26-02
- https://nvd.nist.gov/vuln/detail/CVE-2026-1731
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- BeyondTrust Remote Support / PRA pre-auth RCE (CVE-2026-1731) (February 2026)
References
Exploits and technical analysis
- https://github.com/win3zz/CVE-2026-1731 (exploit)
- https://www.greynoise.io/blog/reconnaissance-beyondtrust-rce-cve-2026-1731 (third-party-advisory)
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-1731 (government-resource)
Other references
- https://beyondtrustcorp.service-now.com/csm?id=csm_kb_article&sysparm_article=KB0023293
- https://www.beyondtrust.com/trust-center/security-advisories/bt26-02
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.