github - ghsa-fqqj-qgxm-vg3x

GHSA-FQQJ-QGXM-VG3X

Vulnerability from github – Published: 2025-04-28 21:30 – Updated: 2025-11-05 00:31

Details

GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup.

Severity ?

8.8 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-34491"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-28T20:15:20Z",
    "severity": "HIGH"
  },
  "details": "GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup.",
  "id": "GHSA-fqqj-qgxm-vg3x",
  "modified": "2025-11-05T00:31:18Z",
  "published": "2025-04-28T21:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-34491"
    },
    {
      "type": "WEB",
      "url": "https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html"
    },
    {
      "type": "WEB",
      "url": "https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/gfi-mailessentials-multinode-insecure-deserialization"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-34491 (GCVE-0-2025-34491)

Vulnerability from cvelistv5 – Published: 2025-04-28 19:20 – Updated: 2025-11-19 01:25

Summary

Severity ?

8.8 (High)


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

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

VulnCheck

References

URL

Tags

	https://frycos.github.io/vulns4free/2025/04/28/ma…	technical-descriptionexploit
	https://gfi.ai/products-and-solutions/network-sec…	vendor-advisory
	https://www.vulncheck.com/advisories/gfi-mailesse…	third-party-advisory

Impacted products

	Vendor	Product	Version
	GFI	MailEssentials	Affected: 0 , < 21.8 (custom)

Credits

Frycos

Show details on NVD website

JSON

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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-34491",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-28T19:40:48.422365Z",
                "version": "2.0.3"
              },
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            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-28T19:41:07.044Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "vendor": "GFI",
          "versions": [
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              "status": "affected",
              "version": "0",
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      "source": {
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      "title": "GFI MailEssentials \u003c 21.8 MultiNode Insecure Deserialization",
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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-FQQJ-QGXM-VG3X

CVE-2025-34491 (GCVE-0-2025-34491)

Tags

Sightings

Nomenclature