Vulnerability-Lookup

CVE-2026-3564 (GCVE-0-2026-3564)

Vulnerability from cvelistv5 – Published: 2026-03-17 14:48 – Updated: 2026-03-18 03:55

Title

ScreenConnect Instance Level Cryptographic Material Exposure

Summary

A condition in ScreenConnect may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios.

Severity ?

9 (Critical)


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

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

ConnectWise

References

URL

Tags

https://www.connectwise.com/company/trust/securit…

Impacted products

	Vendor	Product	Version
	ConnectWise	ScreenConnect	Affected: All versions prior to 26.1

Show details on NVD website

JSON

To clipboard

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    "state": "PUBLISHED"
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}

GHSA-HRC2-HCHG-RQ8R

Vulnerability from github – Published: 2026-03-17 15:36 – Updated: 2026-03-17 15:36

Details

Severity ?

9.0 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-3564"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-17T15:16:19Z",
    "severity": "CRITICAL"
  },
  "details": "A condition in ScreenConnect may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios.",
  "id": "GHSA-hrc2-hchg-rq8r",
  "modified": "2026-03-17T15:36:23Z",
  "published": "2026-03-17T15:36:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3564"
    },
    {
      "type": "WEB",
      "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

FKIE_CVE-2026-3564

Vulnerability from fkie_nvd - Published: 2026-03-17 15:16 - Updated: 2026-03-18 14:52

Severity ?

9.0 (Critical) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	7d616e1a-3288-43b1-a0dd-0a65d3e70a49	https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A condition in ScreenConnect may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios."
    },
    {
      "lang": "es",
      "value": "Una condici\u00f3n en ScreenConnect podr\u00eda permitir a un actor con acceso a material criptogr\u00e1fico a nivel de servidor utilizado para la autenticaci\u00f3n obtener acceso no autorizado, incluyendo privilegios elevados, en ciertos escenarios."
    }
  ],
  "id": "CVE-2026-3564",
  "lastModified": "2026-03-18T14:52:44.227",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 6.0,
        "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-17T15:16:19.253",
  "references": [
    {
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin"
    }
  ],
  "sourceIdentifier": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-3564 (GCVE-0-2026-3564)

GHSA-HRC2-HCHG-RQ8R

FKIE_CVE-2026-3564

Tags

Sightings

Nomenclature