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CVE-2026-102764 · CVE record: PUBLISHED

Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support

BeyondTrust Remote Support

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.

Exploitation evidence

Known exploited · CISA KEV listed

Added 2026-10-16. Ransomware campaign use: Unknown.

CISA required action: Apply 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.

CISA due date: 2026-10-19. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

BeyondTrust / Remote Support

Default status: unaffected

affected: 0 to ≤ 26.2.3 (custom)

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Monitored source mentions

Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.79485,
  "percentile": 0.99609
}

10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.77994,
  "percentile": 0.99576
}

09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.77994,
  "percentile": 0.99576
}

08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.77994,
  "percentile": 0.99576
}

07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.77994,
  "percentile": 0.99576
}

06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.77994,
  "percentile": 0.99575
}

06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.77994,
  "percentile": 0.99575
}

04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.77994,
  "percentile": 0.99574
}

03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.1895,
  "percentile": 0.97304
}

03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.1895,
  "percentile": 0.97299
}

03 Nov 2026, 02:22 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

{
  "containers": {
    "adp": [
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        "metrics": [
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                "id": "CVE-2026-102764",
                "options": [
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                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-10-16",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102764"
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    "cna": {
      "affected": [
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          "product": "Remote Support",
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          "versions": [
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "attackVector": "NETWORK",
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            "vulnAvailabilityImpact": "HIGH",
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-290",
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          ]
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      "providerMetadata": {
        "dateUpdated": "2026-10-15T20:30:32.240Z",
        "orgId": "13061848-ea10-403d-bd75-c83a022c2891",
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      },
      "references": [
        {
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102764"
        },
        {
          "url": "https://www.beyondtrust.com/blog/entry/bt26-05"
        },
        {
          "url": "https://beyondtrustcorp.service-now.com/csm?id=csm_kb_article&sysparm_article=KB0024066"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "title": "Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support",
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    "dateReserved": "2026-09-29T16:29:20.011Z",
    "dateUpdated": "2026-10-17T03:55:27.214Z",
    "state": "PUBLISHED"
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03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2026-102764",
  "cwes": [
    "CWE-290"
  ],
  "dateAdded": "2026-10-16",
  "dueDate": "2026-10-19",
  "forensicTriage": "Yes",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://www.beyondtrust.com/trust-center/security-advisories/bt26-05 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-102764",
  "product": "Remote Support",
  "requiredAction": "Apply 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.",
  "shortDescription": "BeyondTrust Remote Support contains an authentication bypass by spoofing vulnerability that could allow a remote attacker to perform file operations on the appliance.",
  "vendorProject": "BeyondTrust",
  "vulnerabilityName": "BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability"
}

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