CVEvulnerability
CVE-2026-87696
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-13
- Last modified
- 2026-10-27
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-347
Description
Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Affected configurations
• microsoft exchange server 2016
• microsoft exchange server 2019
• microsoft exchange server subscription edition (< 15.02.2562.056)
Related
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87696 Patch, Vendor Advisory