Vulnerability-Lookup

GHSA-5WV8-V74X-QRJC

Vulnerability from github – Published: 2026-07-06 18:31 – Updated: 2026-07-06 18:31

Details

A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support. Improper processing of authentication requests may allow an unauthenticated remote 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.

Severity

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40139"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-06T17:16:30Z",
    "severity": "CRITICAL"
  },
  "details": "A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support.\u00a0Improper processing of authentication requests may allow an unauthenticated remote 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.",
  "id": "GHSA-5wv8-v74x-qrjc",
  "modified": "2026-07-06T18:31:14Z",
  "published": "2026-07-06T18:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40139"
    },
    {
      "type": "WEB",
      "url": "https://www.beyondtrust.com/trust-center/security-advisories/bt26-03"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/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",
      "type": "CVSS_V4"
    }
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}

CVE-2026-40139 (GCVE-0-2026-40139)

Vulnerability from cvelistv5 – Published: 2026-07-06 16:13 – Updated: 2026-07-06 18:55

Title

Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access

Summary

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-287 - Improper Authentication

Assigner

References

1 reference

URL	Tags
https://www.beyondtrust.com/trust-center/security…

Impacted products

2 products

Vendor	Product	Version
BeyondTrust	Remote Support	Affected: 0 , < 26.2.1 (custom) Affected: 0 , < 25.3.3 (custom)
BeyondTrust	Privileged Remote Access	Affected: 0 , < 26.2.1 (custom) Affected: 0 , < 25.3.3 (custom)

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                  },
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                  },
                  {
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-06T18:54:58.730122Z",
                "version": "2.0.3"
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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.

Action not permitted

GHSA-5WV8-V74X-QRJC

CVE-2026-40139 (GCVE-0-2026-40139)

Tags

Sightings

Nomenclature