CVE-2026-102764

Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support

At a glance

Severity: CRITICAL 9.3
Exploitation: Known exploited (CISA KEV) · added 2026-10-16
Exploited per ENISA since 2026-10-16
EPSS: EPSS 18.95 % · percentile 97 (2026-10-27)
State: PUBLISHED
Published: 2026-10-15
Updated: 2026-10-17
Assigner: BT
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 4.0	CRITICAL 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	BT
CVSS 4.0	CRITICAL 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 · 13061848-ea10-403d-bd75-c83a022c2891 (Secondary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-290

European references

ENISA EUVD · EUVD-2026-102427
GCVE · GCVE-0-2026-102764

Affected configurations (NVD CPE)

cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:* ≤ 26.2.3

Affected products

Product	Versions
BeyondTrust · Remote Support	affected 0 ≤ 26.2.3

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD