CVE-2026-21527

MEDIUM EPSS 94.8%
Published Feb 10, 20264mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Feb 10, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

Description

User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
94.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 3

CWE-1286
CWE-345
CWE-451

Affected Products 4

VendorProductVersionRange
microsoftexchange_server2016any
microsoftexchange_server2019any
microsoftexchange_server2019any
microsoftexchange_server_subscription_edition* <15.02.2562.037

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21527
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.