CVE-2026-102764: CWE-290 Authentication bypass by spoofing in BeyondTrust Remote Support
Description
CVE-2026-102764 is a critical authentication bypass vulnerability in BeyondTrust Remote Support. The product's internal components fail to properly validate the origin of received messages, which under certain conditions allows an attacker to perform unauthorized file operations on the appliance. This vulnerability affects versions up to and including 26.2.3. No official patch information is provided in the input data.
CVSS v4.0
Score 9.3critical
Affected software
BeyondTrust
Remote Support
pkg:github/beyondtrust/remote-supportRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in BeyondTrust Remote Support arises from inadequate validation of message origins within internal components. This flaw enables an attacker to bypass authentication controls by spoofing messages, potentially allowing unauthorized file operations on the affected appliance. The CVSS 4.0 score of 9.3 reflects the critical nature of this network-exploitable vulnerability that requires no privileges or user interaction.
Potential Impact
Successful exploitation can lead to unauthorized file operations on the BeyondTrust Remote Support appliance, potentially compromising the integrity and availability of the system. Given the critical CVSS score and the nature of the vulnerability, this could allow attackers to manipulate files without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to the appliance and monitor for suspicious activity related to message spoofing.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- BT
- Date Reserved
- 2026-09-29T16:29:20.011Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad13c442cdf04f6565a7bd3
Added to database: 10/15/2026, 20:49:08 UTC
Last enriched: 10/15/2026, 21:03:15 UTC
Last updated: 10/15/2026, 21:48:28 UTC
Views: 8
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