CVE-2026-102764Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support
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.
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.3 | CRITICAL | 4.0BT (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 9.8 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Oct 19, 2026
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.
Details
- CVE ID
- CVE-2026-102764
- Status
- Analyzed
- Assigner (CNA)
- BT
- Published
- Oct 15, 2026
- Last modified
- 2026-10-17 04:16 UTC
- Weaknesses
- CWE-290 · Authentication bypass by spoofing
Affected Products
As published by the CNA in the CVE record.
BeyondTrustRemote Support1 version range
- through 26.2.3
References
- beyondtrustcorp.service-now.com https://beyondtrustcorp.service-now.com/csm?id=csm_kb_article&sysparm_article=KB0024066
- nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2026-102764
- beyondtrust.com https://www.beyondtrust.com/blog/entry/bt26-05
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102764