CVE-2026-118152: Microsoft Exchange Server Spoofing Vulnerability | Rafael Pfister

Analysis on rafaelpfister.ch

Article · November 11, 2026 November 2026 Exchange security updates: nine vulnerabilities, first update only for Exchange SE The November SU closes nine vulnerabilities in Exchange Server SE, including a critical remote code execution for which a low-privileged account is sufficient. Exchange 2016 and 2019 no longer receive updates. The November Windows updates fix the Exchange outages caused by the October Windows updates.

Vendor description

Cross-site request forgery (csrf) in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Reference data

Vendor

Microsoft

Affected products

Microsoft Exchange Server Subscription Edition RTM

CVSS 3.1

6.5 (MEDIUM)

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C

Weakness type

CWE-352: Cross-Site Request Forgery

Published

November 10, 2026

Official sources

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