PT-2026-112881 · Microsoft · Exchange Server+4

CVE-2026-87696

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Published

2026-10-13

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Updated

2026-10-13

CVSS v3.1

7.5

High

VectorAV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Microsoft Exchange Server (affected versions not specified)
Description Improper verification of cryptographic signatures allows an authorized attacker to elevate privileges over a network.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Verification of Cryptographic Signature

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Weakness Enumeration

CWE-347

Related Identifiers

CVE-2026-87696

Affected Products

Exchange Server
Exchange Server 2016 Cumulative Update 23
Exchange Server 2019 Cumulative Update 14
Exchange Server 2019 Cumulative Update 15
Exchange Server Subscription Edition Rtm