CVEvulnerability

CVE-2026-102764

9.3 CRITICAL Known exploited Published 2026-10-15 Modified 2026-10-17 Official page ↗

CISA Known Exploited Vulnerability

BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability — BeyondTrust Remote Support

BeyondTrust Remote Support contains an authentication bypass by spoofing vulnerability that could allow a remote attacker to perform file operations on the appliance.

Added to KEV: 2026-10-16
Remediation due: 2026-10-19
Ransomware use: Unknown
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes: https://www.beyondtrust.com/trust-center/security-advisories/bt26-05 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-102764

Status: Analyzed
Published: 2026-10-15
Last modified: 2026-10-17
Assigner: 13061848-ea10-403d-bd75-c83a022c2891
CVSS 4.0 (13061848-ea10-403d-bd75-c83a022c2891): 9.3 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected]): 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses: CWE-290

Description

The vulnerability exists within internal components of BeyondTrust’s Remote Support product. The components did not adequately validate the origin of the messages it received. Under the right conditions, this could allow an attacker to perform file operations on the appliance.

Affected configurations

• beyondtrust remote support (<= 26.2.3)

Weakness · CWE (1)

CWE-290 Authentication Bypass by Spoofing weakness

References