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EUVD-2026-48458

🗓️ 24 Jul 2026 00:01:12Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 4 Views

Improper authentication in Microsoft Exchange Online enables an unauthorized attacker to tamper.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-56191
24 Jul 202600:01
attackerkb
Circl
CVE-2026-56191
24 Jul 202600:26
circl
CVE
CVE-2026-56191
24 Jul 202600:01
cve
Cvelist
CVE-2026-56191 Microsoft Exchange Online Tampering Vulnerability
24 Jul 202600:01
cvelist
Microsoft CVE
Microsoft Exchange Online Tampering Vulnerability
23 Jul 202614:00
mscve
NVD
CVE-2026-56191
24 Jul 202601:17
nvd
Positive Technologies
PT-2026-64208
24 Jul 202600:00
ptsecurity
[
  {
    "enisaIdVendor": [
      {
        "id": "72dbddae-d4c9-3fe6-8353-3f201a8f2eed",
        "vendor": {
          "name": "Microsoft"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "b7678a09-745b-3035-89d1-e7809bfb1d89",
        "product": {
          "name": "Microsoft Exchange Online"
        },
        "product_version": "-"
      }
    ]
  }
]

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24 Jul 2026 14:36Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.110
4