# CVE-2026-40138: BeyondTrust Remote Support and PRA authentication bypass

Source: https://junglewise.ai/threats/cve-2026-40138-beyondtrust-remote-support-and-pra-authentication-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-06. Updated: 2026-07-06  
License: CC BY 4.0 with a link back

CVE-2026-40138 · Severity: info · CVSS 9.2 · Published 2026-07-06

BeyondTrust Remote Support and Privileged Remote Access solutions are affected by a critical security flaw in how they verify user identities. A remote attacker could bypass security controls to gain full access to the management appliance, potentially taking over administrative accounts. This could lead to a total compromise of the remote access infrastructure used to manage sensitive corporate systems.

Technologies: [BeyondTrust Privileged Remote Access](https://junglewise.ai/threats/technologies/privileged-remote-access), [BeyondTrust Remote Support](https://junglewise.ai/threats/technologies/remote-support). Vendors: [BeyondTrust](https://junglewise.ai/threats/vendors/beyondtrust).

## Quick answers

**Is CVE-2026-40138 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40138 being exploited in the wild.

**How severe is CVE-2026-40138?** Informational severity, with a CVSS score of 9.2, published 6 July 2026.

**Which products and versions are affected?** BeyondTrust Privileged Remote Access < 25.3.3, < 26.2.1; BeyondTrust Remote Support < 25.3.3, < 26.2.1.

**Is there a fix for CVE-2026-40138?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-40138 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-40138?** Check whether you run BeyondTrust Privileged Remote Access or BeyondTrust Remote Support at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A critical improper authentication vulnerability (CWE-287) exists in the authentication subsystem of BeyondTrust Remote Support and Privileged Remote Access. The flaw stems from improper validation of authentication data, which can be exploited by a network-positioned attacker to bypass access controls without prior credentials. Successful exploitation allows for unauthorized access to the appliance, including accounts with elevated privileges. The vulnerability requires a specific, though unspecified, authentication configuration to be enabled. BeyondTrust has released patches in versions 25.3.3 and 26.2.1 to address this issue.

## Affected products

- BeyondTrust Remote Support < 25.3.3, < 26.2.1
- BeyondTrust Privileged Remote Access < 25.3.3, < 26.2.1

## Timeline

- 2026-07-06: disclosed
- 2026-07-06: advisory

## References

- [https://www.beyondtrust.com/trust-center/security-advisories/bt26-03](https://www.beyondtrust.com/trust-center/security-advisories/bt26-03)

## Related threats

- [BeyondTrust Remote Support authentication bypass by spoofing](https://junglewise.ai/threats/cve-2026-102764-beyondtrust-remote-support-authentication-bypass-by-spoofing)
- [BeyondTrust Remote Support and PRA improper input validation](https://junglewise.ai/threats/cve-2026-40141-beyondtrust-remote-support-and-pra-improper-input-validation)
- [BeyondTrust Remote Support and PRA denial of service in network subsystem](https://junglewise.ai/threats/cve-2026-40140-beyondtrust-remote-support-and-pra-denial-of-service-in-network)
- [BeyondTrust Remote Support and PRA authentication bypass](https://junglewise.ai/threats/cve-2026-40139-beyondtrust-remote-support-and-pra-authentication-bypass)
- [BeyondTrust Remote Support and PRA OS command injection](https://junglewise.ai/threats/cve-2026-1731-beyondtrust-remote-support-and-pra-os-command-injection)