CVE-2026-94510

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BaseFortify

Publication date: 2026-10-08

Last updated on: 2026-10-10

Assigner: Microsoft Corporation

Description

Authorization bypass through user-controlled key in Microsoft Bookings allows an unauthorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-08

Last Modified

2026-10-10

Generated

2026-10-19

AI Q&A

2026-10-09

EPSS Evaluated

2026-10-18

NVD

CVE-2026-94510

EUVD

EUVD-2026-95398

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	Bookings *

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-639	The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

Executive Summary

This vulnerability is an authorization bypass in Microsoft Bookings. It allows an unauthorized attacker to elevate their privileges over a network by manipulating a user-controlled key.

Detection Guidance

Detecting this vulnerability requires checking for unauthorized privilege escalation in Microsoft Bookings. Monitor for unusual user-controlled key modifications or unexpected privilege changes in logs. Review access logs for Bookings service for signs of unauthorized access or privilege elevation attempts.

Impact Analysis

An attacker could gain unauthorized access to sensitive data or functions within Microsoft Bookings, potentially leading to data breaches or unauthorized modifications.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR or HIPAA if it results in unauthorized access to personal or health data, potentially violating data protection requirements.

Mitigation Strategies

Apply the latest security updates from Microsoft for Microsoft Bookings immediately. Disable or restrict access to Microsoft Bookings if not required. Monitor network traffic for unusual privilege escalation attempts.

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