CVE-2026-102764
Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support
BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA notes
https://www.beyondtrust.com/trust-center/security-advisories/bt26-05 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-102764
Description
The vulnerability exists within internal components of BeyondTrust’s Remote Support product. The components did not adequately validate the origin of the messages it received. Under the right conditions, this could allow an attacker to perform file operations on the appliance.
Severity
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation Context
as of October 17, 2026- CISA added CVE-2026-102764 to the KEV catalog 1 day after its CVE record was published. The median for entries added in 2026 so far is 14 days.
- It is one of 4 BeyondTrust entries in the CISA KEV catalog, and one of 2 added in 2026.
- Its current EPSS score (0.6%) is higher than that of 1% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| BeyondTrust | BeyondTrust Remote Support | 0 to 26.2.3 |
References
3 LinksRecord Details
More from BeyondTrust
Remote code execution vulnerability in BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA)
Command Injection Vulnerability in Remote Support(RS) & Privileged Remote Access (PRA)
Command Injection vulnerability in Remote Support(RS) & Privilege Remote Access (PRA)
Related
Tool categories
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.