CVE-2025-5309
Published: 16 June 2025
Summary
CVE-2025-5309 is a high-severity Code Injection (CWE-94) vulnerability in Beyondtrust Privileged Remote Access. Its CVSS base score is 8.6 (High).
Operationally, ranked in the top 20.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability CVE-2025-5309 is a Server-Side Template Injection flaw, tracked under CWE-94, that affects the chat feature in BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA). It carries a CVSS 4.0 score of 8.6 and can result in remote code execution on the server.
An unauthenticated attacker can exploit the issue over the network by supplying crafted input through the chat component, which requires user interaction on the target side but needs no privileges. Successful exploitation grants the attacker full control over confidentiality, integrity, and availability on the affected system.
The vendor has published advisory BT25-04 at https://www.beyondtrust.com/trust-center/security-advisories/bt25-04. The EPSS score remains low, with a current value of 0.0128 and a peak of 0.0144.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-18420
Vulnerability details
The chat feature within Remote Support (RS) and Privileged Remote Access (PRA) is vulnerable to a Server-Side Template Injection vulnerability which can lead to remote code execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.