Critical 9.3Known exploited (CISA KEV)Published Oct 15, 2026

CVE-2026-102764Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support

Updated under an hour ago (2026-10-19 04:00 UTC)

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It affects BeyondTrust Remote Support. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Oct 16, 2026; federal agencies must remediate by Oct 19, 2026. Treat that date as your deadline.

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Every CVE for BeyondTrust Remote Support

Exploited in the last 30 days

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.

CVSS: 9.3 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-290
Known exploited: Added to CISA KEV Oct 16, 2026; federal remediation due Oct 19, 2026Apply 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.
EPSS (exploitation in the next 30 days): 0.60% (percentile 48)
Assigned by: BT
NVD analysis: Analyzed
Record last updated: Oct 17, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

BeyondTrust Remote Support beyondtrust:remote_support (from the name)	through 26.2.3	CNA record
beyondtrust remote_support beyondtrust:remote_support	through 26.2.3	NVD

References

https://nvd.nist.gov/vuln/detail/CVE-2026-102764us-government-resource
https://www.beyondtrust.com/blog/entry/bt26-05vendor-advisory
https://beyondtrustcorp.service-now.com/csm?id=csm_kb_article&sysparm_article=KB0024066permissions-required
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102764us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.