High 8.7Published Jul 6, 2026

CVE-2026-40140High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

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It affects BeyondTrust Remote Support and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for BeyondTrust Remote Support

Exploited in the last 30 days

BeyondTrust Remote Support and Privileged Remote Access contain a high-severity pre-authentication vulnerability in the network communication subsystem. Insufficient validation of client-supplied input may allow an unauthenticated remote attacker to trigger a denial-of-service condition affecting appliance availability.

CVSS: 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: BT
NVD analysis: Analyzed
Record last updated: Jul 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

BeyondTrust Remote Support beyondtrust:remote_support (from the name)	through 25.3.2	CNA record
BeyondTrust Privileged Remote Access beyondtrust:privileged_remote_access (from the name)	through 25.3.2	CNA record
beyondtrust privileged_remote_access beyondtrust:privileged_remote_access	before 25.3.3	NVD
beyondtrust remote_support beyondtrust:remote_support	before 25.3.3	NVD

References

References

https://www.beyondtrust.com/trust-center/security-advisories/bt26-03	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.