Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-1731

Remote Support(RS) & Privileged Remote Access(PRA) Remote Code Execution

BeyondTrust / Remote Support(RS) & Privileged Remote Access(PRA) · 0 to <= RS 25.3.1

Watch CVE-2026-1731 Browse KEV feed
Severity
CVSS 9.9 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
91.7%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-1731 is an unauthenticated vulnerability affecting BeyondTrust Remote Support(RS) & Privileged Remote Access(PRA). BeyondTrust Remote Support (RS) and certain older versions of Privileged Remote Access (PRA)...

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(RS) & Privileged Remote Access(PRA) 0 to <= rs 25.3.1.

What should we do?

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

Overview

Remote Support(RS) & Privileged Remote Access(PRA) Remote Code Execution

BeyondTrust Remote Support (RS) and certain older versions of Privileged Remote Access (PRA) contain a critical pre-authentication remote code execution vulnerability.

By sending specially crafted requests, an unauthenticated remote attacker may be able to execute operating system commands in the context of the site user.

BeyondTrust Affected
Remote Support(RS) & Privileged Remote Access(PRA)
Through RS 25.3.1 Through PRA 24.3.4
Published
06 Feb 2026
Exploitation Reported
01 Jun 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner cisa malware

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

CVE

Recorded 01 Jun 2026

A trusted third party reported exploitation.

Used in malware

CVE

Recorded 02 Jun 2026

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 22 Feb 2026

Public scanner or PoC coverage increases practical exploitability.

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
CVE First 2026-06-01 10:51 UTC
CISA 2026-06-02 14:03 UTC
The Shadowserver 2026-06-04 13:00 UTC
Google Threat Intelligence 2026-09-30 15:21 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.

Virtual patch status

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

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2026/CVE-2026-1731.yaml 01 Jun 2026

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

9.9 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:L/SI:H/SA:L

EPSS

91.7%

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

Weaknesses

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

Recent mention · The Record

Google: Vulnerability disclosures double to 10,000 per month as AI fuels exploitation

Vulnerability disclosures continue to skyrocket, doubling over the course of the year to more than 10,000 each month, Google researchers warned.

Read full advisory

All CVSS Scores

CVSS v4.0 9.9 Critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:H/SA:L

CVSS v3.1 9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

All Mentions

Recent mention · The Record

Google: Vulnerability disclosures double to 10,000 per month as AI fuels exploitation

The Record · 30 Sep 2026

Vulnerability disclosures continue to skyrocket, doubling over the course of the year to more than 10,000 each month, Google researchers warned.

Recent mention · Google Threat Intelligence

Written by: Robin Grunewald, Supriya Mazumdar, Kelli Vanderlee Introduction Google Threat Intelligence Group (GTIG) examines vulnerability...

Google Threat Intelligence · 30 Sep 2026

Written by: Robin Grunewald, Supriya Mazumdar, Kelli Vanderlee Introduction Google Threat Intelligence Group (GTIG) examines vulnerability disclosure and exploitation statistics to evaluate the impact of artificial intelligence (AI) on the vulnerability threat landscape. We found that AI is measurably changing not just the pace of vulnerability discovery and exploitation, but also the types and typical risk profiles of vulnerabilities that are being discovered. Key findings:  Vulnerability disclosures doubled: the number of vulnerabilities disclosed per month doubled, rising from 5,045...

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

BeyondTrust Remote Support - Unauthenticated WebSocket RCE

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 15:21 UTC

    KEV confirmed by Google Threat Intelligence

    Exploitation attested by an external source

  2. 14:21 UTC

    Public PoC available

    Public proof-of-concept code published

  3. 13:00 UTC

    KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  4. 14:03 UTC

    First public exploitation report

    Exploit observed in malware

  5. 14:03 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  6. 15:34 UTC

    Nuclei template available

    Scanner coverage available

  7. 10:51 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  8. 21:49 UTC

    CVE published

    Vulnerability disclosed publicly

  9. 23:54 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.

Start 14-day Pro trial Read API docs
  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-1731

Sample API response 
{
  "cve_id": "CVE-2026-1731",
  "confidence": "Confirmed",
  "cvss_score": 9.9,
  "cvss_estimated": false,
  "epss_score": 0.91739,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}