Rapid7 Analysis: Unauthenticated File Upload to RCE in BeyondTrust Remote Support (CVE-2026-102764)
MentionsBeyondTrust
Overview An origin-validation flaw in BeyondTrust Remote Support lets an unauthenticated attacker write files on the appliance and execute code as the site's operating-system user. The entry point is the public customer connection used to start a support session. No account credentials or user interaction are required.
Summary from Rapid7 Blog.
Explained
The technology and terms in this story. Learn more
- AttackRemote code execution · RCEA flaw that lets an attacker run their own code on someone else's machine over the network.
- TechnologyPHPA programming language that powers a large share of websites, including WordPress.
- ConceptCVE · Common Vulnerabilities and ExposuresThe public ID system for vulnerabilities, such as CVE-2026-12345, so everyone means the same bug.
Why it was possible
The weaknesses behind this story's CVEs, from each CVE Record.
Vulnerabilities in this story
Severity and exploitation facts from NVD, FIRST, and CISA.
Related coverage
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