github - ghsa-qjrp-xr9r-wmrg

ghsa-qjrp-xr9r-wmrg

Vulnerability from github

Published

2025-04-25 21:31

Modified

2025-06-03 21:30

Severity ?

8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

If these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to remote code execution on the server.

The risk does not originate from a vulnerability introduced by ScreenConnect, but from platform level behavior. This had no direct impact to ScreenConnect Client. ScreenConnect 2025.4 patch disables ViewState and removes any dependency on it.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-3935"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-25T19:15:49Z",
    "severity": "HIGH"
  },
  "details": "ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. ASP.NET Web Forms use ViewState to preserve page and control state, with data encoded using Base64 protected by machine keys.\u00a0\nIt is important to note that to obtain these machine keys, privileged system level access must be obtained. \n\n\n\nIf these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to remote code execution on the server.\u00a0\n\n\n\nThe risk does not originate from a vulnerability introduced by ScreenConnect, but from platform level behavior.\u00a0 This had no direct impact to ScreenConnect Client.\u00a0ScreenConnect 2025.4 patch disables ViewState and removes any dependency on it.",
  "id": "GHSA-qjrp-xr9r-wmrg",
  "modified": "2025-06-03T21:30:35Z",
  "published": "2025-04-25T21:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3935"
    },
    {
      "type": "WEB",
      "url": "https://www.connectwise.com/company/trust/advisories"
    },
    {
      "type": "WEB",
      "url": "https://www.connectwise.com/company/trust/security-bulletins/screenconnect-security-patch-2025.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-3935 (GCVE-0-2025-3935)

Vulnerability from cvelistv5

Published

2025-04-25 18:27

Modified

2025-09-03 16:31

Severity ?

8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-502 - Deserialization of Untrusted Data

Summary

ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. ASP.NET Web Forms use ViewState to preserve page and control state, with data encoded using Base64 protected by machine keys. It is important to note that to obtain these machine keys, privileged system level access must be obtained. If these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to remote code execution on the server. The risk does not originate from a vulnerability introduced by ScreenConnect, but from platform level behavior. This had no direct impact to ScreenConnect Client. ScreenConnect 2025.4 patch disables ViewState and removes any dependency on it.

References

▼	URL	Tags
	https://www.connectwise.com/company/trust/security-bulletins/screenconnect-security-patch-2025.4
	https://www.connectwise.com/company/trust/advisories

Impacted products

	Vendor	Product	Version
	ConnectWise	ScreenConnect	Version: <25.2.3

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2025-06-06T03:55:32.340641Z",
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        }
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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