Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-102764

Remote Support

BeyondTrust / Remote Support · 0 to <= 26.2.3

Watch CVE-2026-102764 Browse KEV feed
Severity
CVSS 9.3 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
0.6%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-102764 is an unauthenticated vulnerability affecting BeyondTrust Remote Support. The vulnerability exists within internal components of BeyondTrust’s Remote Support product. The components did not adequately...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

BeyondTrust / Remote Support 0 to <= 26.2.3.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

The vulnerability exists within internal components of BeyondTrust’s Remote Support product

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.

BeyondTrust Affected
Remote Support
Through 26.2.3
Published
15 Oct 2026
Exploitation Reported
16 Oct 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

cisa

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Google Threat Intelligence

Recorded 16 Oct 2026

A trusted third party reported exploitation.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Google Threat Intelligence First 2026-10-16 06:20 UTC
SOCRadar 2026-10-16 15:20 UTC
CISA 2026-10-16 17:31 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

9.3 Critical

Potential damage if exploited. Separate from whether attackers are using it.

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

0.6%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Authentication Bypass by Spoofing CWE-290

Recent mention · SOCRadar

CVE-2026-102764: BeyondTrust Zero-Day Exploited

BeyondTrust has disclosed CVE-2026-102764, a critical Remote Support vulnerability exploited as a zero-day weeks before customers received a patch. The attack began on August 29, 2026, when one BeyondTrust-hosted Remote Support instance and one self-hosted appliance were...

Read full advisory

All Mentions

Recent mention · SOCRadar

CVE-2026-102764: BeyondTrust Zero-Day Exploited

SOCRadar · 16 Oct 2026

BeyondTrust has disclosed CVE-2026-102764, a critical Remote Support vulnerability exploited as a zero-day weeks before customers received a patch. The attack began on August 29, 2026, when one BeyondTrust-hosted Remote Support instance and one self-hosted appliance were compromised. BeyondTrust detected the hosted incident during proactive hunting on September 28, reproduced the entry vector that day, […]

Recent mention · The Record

Suspected Chinese espionage attackers abusing BeyondTrust IT support zero-day

The Record · 16 Oct 2026

An alleged Chinese state-backed group is using a new zero-day affecting BeyondTrust IT support software to conduct espionage attacks.

Recent mention · NCSC Security Advisories

NCSC-2026-0437 [1.00] [H/H] Kwetsbaarheid verholpen in BeyondTrust Remote Support

NCSC Security Advisories · 16 Oct 2026

BeyondTrust heeft een kritieke kwetsbaarheid verholpen in BeyondTrust Remote Support. De kwetsbaarheid met kenmerk CVE-2026-102764 heeft een CVSS-score van 9.3 en betreft onvoldoende validatie van de herkomst van berichten binnen de interne componenten van het product. Hierdoor kan een niet-geauthenticeerde kwaadwillende de kwetsbaarheid op afstand misbruiken om bestanden op een getroffen appliance te plaatsen of te wijzigen. Alle Remote Support-versies tot en met 26.2.3 zijn getroffen. BeyondTrust bevestigt dat CVE-2026-102764 als zeroday-kwetsbaarheid is misbruikt.

Recent mention · The Hacker News

China-Linked Hackers Exploited BeyondTrust Zero-Day to Take Over Remote Support Servers

The Hacker News · 16 Oct 2026

Ravie LakshmananOct 16, 2026Zero-Day / Vulnerability The China-nexus cyber espionage group tracked as Armory Castle (previously UNC5221 or Warp Panda) exploited a newly disclosed security flaw in BeyondTrust Remote Support (formerly Bomgar) as a zero-day in late August 2026. The vulnerability, tracked as CVE-2026-102764 (CVSS score: 9.3), is a case of improper origin validation in an internal messaging component that could be exploited by a remote attacker to perform file operations on an affected appliance. "The vulnerability exists within internal components of Remote Support,"...

Recent mention · Google Threat Intelligence

Written by: Jayson Frost, Bryce Greathouse, Brian Meyer, John Palmisano, Rajesh Rajeshirke, Steve Rasch, John Wolfram Introduction  On October 15,...

Google Threat Intelligence · 15 Oct 2026

Written by: Jayson Frost, Bryce Greathouse, Brian Meyer, John Palmisano, Rajesh Rajeshirke, Steve Rasch, John Wolfram Introduction  On October 15, BeyondTrust disclosed a vulnerability, CVE-2026-102764, impacting BeyondTrust Remote Support (formerly Bomgar) appliances. BeyondTrust Remote Support is an enterprise secure remote access solution that enables IT teams to securely access and troubleshoot remote endpoints. The successful exploitation of this vulnerability results in the arbitrary upload of files.  During an incident response engagement, Mandiant identified evidence that ARMORY...

Timeline

From disclosure to observed exploitation

  1. 17:31 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  2. 15:20 UTC

    KEV confirmed by SOCRadar

    Exploitation attested by an external source

  3. 06:20 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  4. 20:30 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 16:29 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
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GET /api/v2/pro/kevs/CVE-2026-102764

Sample API response 
{
  "cve_id": "CVE-2026-102764",
  "confidence": "Confirmed",
  "cvss_score": 9.3,
  "cvss_estimated": false,
  "epss_score": 0.00601,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}