Type Vulnerability
An origin-validation flaw in BeyondTrust Remote Support allows an unauthenticated attacker to write files on the appliance and execute code as the site's operating-system user.
BeyondTrust · Auth bypass
BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability
CVE-2026-1731
What this means
This is rated critical severity (9.9 out of 10). It is on the known-exploited catalogue, which means attacks using it have already been seen. Ask IT whether Beyondtrust Privileged Remote Access and Beyondtrust Remote Support are in your estate, and treat that as the priority.
Full vendor 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.
Scoring and exploitation
9.9/ 10
CVSS 4.0 base scoreCritical
Exploitable over the network without any account, and no one has to click or open anything. High impact on confidentiality, integrity, availability and subsequent integrity; low on subsequent confidentiality and subsequent availability.
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Attack requirementsNoneAT:N
Privileges requiredNonePR:N
User interactionNoneUI:N
Impact
Longer bar: more harm
ConfidentialityHighVC:H
IntegrityHighVI:H
AvailabilityHighVA:H
Subsequent confidentialityLowSC:L
Subsequent integrityHighSI:H
Subsequent availabilityLowSA:L
- Elevated attack likelihood (~93.9% in 30 days)Model estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Yes — confirmed exploitation (US CISA )
- Known
- Listed product
- BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA)
Weaknesses
CWE-78
Affected products ()
- Beyondtrust Privileged Remote Access
- Beyondtrust Remote Support
Show the raw CPE strings (2)
- cpe:2.3:a:beyondtrust:privileged_remote_access:*:*:*:*:*:*:*:*
- cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:*
References
5 links from the CVE record, grouped by site; the vendor's advisory comes first.
beyondtrust.com1 linkVendor advisory
- bt26-02 (opens in a new tab)Vendor Advisory
beyondtrustcorp.service-now.com1 link
- csm (opens in a new tab)Permissions Required
github.com1 link
- CVE-2026-1731 (opens in a new tab)Exploit · Third Party Advisory
cisa.gov1 link
- known-exploited-vulnerabilities-catalog (opens in a new tab)US Government Resource
greynoise.io1 link
- reconnaissance-beyondtrust-rce-cve-2026-1731 (opens in a new tab)Third Party Advisory