CVE-2026-102764 kev in the critical feed json
Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support
published 2026-10-15 24 d ago modified 2026-10-17 23 d ago also EUVD-2026-102427
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Exploited
- added 2026-10-16
- epss
- 78.0%
- EPSS 78.0% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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.
Patch / fix
cisa 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.
Timeline
- Published
- CISA SSVC: exploitation active
- Added to CISA KEV
- CISA patch deadline
Known exploited
- Added
- 24 d ago
- Patch by
- 2026-10-19 (21 d ago)
- Ransomware
- Not known
- 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.
- Vendor, product
- BeyondTrust, Remote Support
- CISA name
- BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- total
- Assessed
- 24 d ago
Exploit prediction
77.99% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template BeyondTrust Remote Support <= 26.2.3 - Origin Validation File Upload nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 4.0 | 9.3 | 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 |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- BeyondTrust Remote Support
Classification
- Weakness
-
- CWE-290 Authentication Bypass by Spoofing
References
-
beyondtrust.com
/blog/entry/bt26-05
vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-102764
us-government-resource
-
beyondtrustcorp.service-now.com
/csm?id=csm_kb_article&sysparm_article=KB0024066
permissions-required
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102764
government-resource, us-government-resource
Sources
- CVE List CVE-2026-102764
- NVD CVE-2026-102764
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