CVE-2026-40140 (GCVE-0-2026-40140)

Vulnerability from cvelistv5 – Published: 2026-07-06 16:13 – Updated: 2026-07-06 18:55
VLAI
Title
High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access
Summary
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.
Severity
8.7 (High)
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
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
BT
References
Impacted products
Vendor Product Version
BeyondTrust Remote Support Affected: 0 , < 26.2.1 (custom)
Affected: 0 , < 25.3.3 (custom)
Create a notification for this product.
BeyondTrust Privileged Remote Access Affected: 0 , < 26.2.1 (custom)
Affected: 0 , < 25.3.3 (custom)
Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.