AI description
CVE-2026-40138 is a pre-authentication vulnerability found in the authentication subsystem of BeyondTrust Remote Support and Privileged Remote Access products. This flaw, categorized as an improper authentication issue (CWE-287), arises from inadequate validation of authentication data. A network-positioned attacker could exploit this vulnerability to bypass existing access controls and gain unauthorized access to the appliance, potentially with elevated privileges. Successful exploitation is contingent upon a specific authentication configuration being enabled within the affected systems.
- Description
- A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support and Privileged Remote Access. Improper validation of authentication data may allow a network-positioned attacker to bypass access controls and gain unauthorized access to the appliance, including accounts with elevated privileges. Exploitation requires a specific authentication configuration to be enabled
- Source
- 13061848-ea10-403d-bd75-c83a022c2891
- NVD status
- Analyzed
- Products
- privileged_remote_access, remote_support
CVSS 4.0
- Type
- Secondary
- Base score
- 9.2
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:H/AT:P/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
- Severity
- CRITICAL
CVSS 3.1
- Type
- Primary
- Base score
- 8.1
- Impact score
- 5.9
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
- 13061848-ea10-403d-bd75-c83a022c2891
- CWE-287
Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.
- Hype score
1
#BeyondTrust patches four vulnerabilities in Remote Support and PRA: CVE-2026-40138 and CVE-2026-40139 (CVSS 9.2) enable unauthenticated auth bypass including privileged account access. CVE-2026-40140 enables pre-auth DoS; CVE-2026-40141 authenticated authz bypass. #patchrelease
@MeridianEU
9 Jul 2026
42 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
Security Bulletin: Critical BeyondTrust Vulnerabilities (CVE-2026-40138 & CVE-2026-40139) BeyondTrust has released fixes for two critical vulnerabilities affecting Remote Support and Privileged Remote Access. https://t.co/RswNaBGYPA
@RedLegg
7 Jul 2026
60 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
🚨 CVE-2026-40138: Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access Critical Vulnerability Alert! BeyondTrust is affected by CVE-2026-40138. Full Vulnerability Details & Analysis at DarkEye: 🔗 https://t.co/QmccZJA8PU
@zoomeye_team
7 Jul 2026
3356 Impressions
8 Retweets
33 Likes
4 Bookmarks
0 Replies
0 Quotes
BeyondTrust patched a critical pre-authentication vulnerability (CVE-2026-40138, CVE-2026-40139, CVE-2026-40140). Update Remote Support instances now. #BeyondTrust #Vulnerability #CVE202640138 #CyberSecurity #RemoteSupport https://t.co/kB7l7n2xfP
@Daily_CyberSec
6 Jul 2026
627 Impressions
0 Retweets
6 Likes
1 Bookmark
0 Replies
0 Quotes
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