github - ghsa-hcwq-wcmg-w44r

GHSA-HCWQ-WCMG-W44R

Vulnerability from github – Published: 2025-07-03 12:34 – Updated: 2025-07-03 12:34

Details

The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption. The challenge is sent from the server to the client, is encrypted by the client and sent back. The server does the same encryption locally and if the responses match it is prooven that the client knows the correct password. Since all VNC communication is unencrypted, an attacker can obtain the challenge and response and try to derive the password from this information.

Severity ?

6.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-27458"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-327"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T12:15:23Z",
    "severity": "MODERATE"
  },
  "details": "The VNC authentication mechanism bases on a challenge-response system where both server and client use the same password for encryption. The challenge is sent from the server to the client, is encrypted by the client and sent back. The server does the same encryption locally and if the responses match it is prooven that the client knows the correct password. Since all VNC communication is unencrypted, an attacker can obtain the challenge and response and try to derive the password from this information.",
  "id": "GHSA-hcwq-wcmg-w44r",
  "modified": "2025-07-03T12:34:58Z",
  "published": "2025-07-03T12:34:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27458"
    },
    {
      "type": "WEB",
      "url": "https://sick.com/psirt"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
    },
    {
      "type": "WEB",
      "url": "https://www.endress.com"
    },
    {
      "type": "WEB",
      "url": "https://www.first.org/cvss/calculator/3.1"
    },
    {
      "type": "WEB",
      "url": "https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.json"
    },
    {
      "type": "WEB",
      "url": "https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0008.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-27458 (GCVE-0-2025-27458)

Vulnerability from cvelistv5 – Published: 2025-07-03 11:33 – Updated: 2025-07-03 13:15

Summary

Severity ?

6.5 (Medium)


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

CWE

CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Assigner

SICK AG

References

URL

Tags

	https://www.endress.com	x_Endress+Hauser
	https://sick.com/psirt	x_SICK PSIRT Security Advisories
	https://www.cisa.gov/resources-tools/resources/ic…	x_ICS-CERT recommended practices on Industrial Security
	https://www.first.org/cvss/calculator/3.1	x_CVSS v3.1 Calculator
	https://www.sick.com/.well-known/csaf/white/2025/…	x_The canonical URL.
	https://sick.com/psirt	vendor-advisory
	https://www.sick.com/.well-known/csaf/white/2025/…	vendor-advisory

Impacted products

	Vendor	Product	Version
	Endress+Hauser	Endress+Hauser MEAC300-FNADE4	Affected: vers:all/* (custom)

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JSON

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            "other": {
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                "id": "CVE-2025-27458",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-03T12:59:45.758774Z",
                "version": "2.0.3"
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            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-03T13:15:43.013Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        }
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        },
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          ],
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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

GHSA-HCWQ-WCMG-W44R

CVE-2025-27458 (GCVE-0-2025-27458)

Tags

Sightings

Nomenclature