MinorCritical vulnerability
CVE-2026-87696 (CVSS 7.5)
NVD · officialPublished Oct 13, 2026Risk 23/100
Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Technical details
CVSS
7.5
AV:NetworkAC:HighPR:LowUI:NoneC:HighI:HighA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
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