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EUVD-2025-34428

🗓️ 14 Oct 2025 18:30:30Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 1 Views

Incorrect authentication algorithm in Microsoft Exchange Server enables unauthorized local escalation.

Related
Affected
Refs
[
  {
    "enisaIdVendor": [
      {
        "id": "3fecf9a0-a39f-3ff2-97f9-5a8643ab313d",
        "vendor": {
          "name": "Microsoft"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "2cd1e1f2-d902-3406-9a91-557527897738",
        "product": {
          "name": "Microsoft Exchange Server 2019 Cumulative Update 14"
        },
        "product_version": "15.02.0.0 <15.02.1544.036"
      },
      {
        "id": "ca726481-75b9-3aef-9f7a-3a75778ad367",
        "product": {
          "name": "Microsoft Exchange Server 2016 Cumulative Update 23"
        },
        "product_version": "15.01.0.0 <15.01.2507.061"
      },
      {
        "id": "df520985-289c-33ac-a00a-ebf3cd39bea5",
        "product": {
          "name": "Microsoft Exchange Server Subscription Edition RTM"
        },
        "product_version": "15.02.0.0 <15.02.2562.029"
      },
      {
        "id": "e01c7f58-3574-3ad1-95bf-f3d81aaede03",
        "product": {
          "name": "Microsoft Exchange Server 2019 Cumulative Update 15"
        },
        "product_version": "15.02.0.0 <15.02.1748.039"
      }
    ]
  }
]

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14 Oct 2025 18:30Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.18.4
EPSS0.00064
1