CVE-2026-102764KEV · OVERDUECWE-290

BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability

Critical · published October 16, 2026

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 67.4th percentile for exploit probability.

5
days past CISA
deadline
CVSS v3.1
9.8
EPSS
1%
Percentile
67.4
In the wild
Confirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
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
EPSS
0.01180 · 67.4th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2026-10-16T01:17Z
KEV added
2026-10-16 · due 2026-10-19
Affected products (1)
ProductVersionsFixed in
beyondtrust/remote_support≤ 26.2.3—
References (4)
https://beyondtrustcorp.service-now.com/csm?id=csm_kb_article&sysparm_article=KB0024066 · 13061848-ea10-403d-bd75-c83a022c2891https://nvd.nist.gov/vuln/detail/CVE-2026-102764 · 13061848-ea10-403d-bd75-c83a022c2891https://www.beyondtrust.com/blog/entry/bt26-05 · 13061848-ea10-403d-bd75-c83a022c2891https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102764 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 16 OCT 00:00Z
    Added to CISA KEV — remediate by Oct 19
    kev
  • 15 OCT 20:30Z
    Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support
    cvelistv5
  • 15 OCT 20:30Z
    Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support
    cvelistv5