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CVE-2026-96940

8.8 HIGH

Published 2026-10-02 · Updated 2026-10-08

AI risk analysis

Summary
A weakness in Microsoft Exchange Server's authorization mechanism allows authenticated attackers to escalate their privileges, posing a significant security risk.
Exploitability
Exploitation requires an authenticated user with network access, making it moderately difficult to exploit.
Blast radius
If exploited, the attacker could gain full control over the affected Exchange Server, potentially leading to data breaches or service disruptions.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the latest version of Microsoft Exchange Server as soon as possible.
auth-bypasspriv-escalationnetworkexchange

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests. An attacker who successfully exploited this vulnerability could perform script/content injection attacks and attempt to trick the user into disclosing sensitive information. To exploit the vulnerability, an attacker could send a specially crafted email message containing a malicious link to a user. Alternatively, an attacker could use a chat client to social engineer a user into clicking the malicious link. The security update addresses the vulnerability by correcting how Microsoft Exchange validates web requests. Note: In order to exploit this vulnerability, a user must click a maliciously crafted link from an attacker.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-1390

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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