Local privilege escalation for low-privileged users
Published Oct 13, 2026 · Updated Oct 13, 2026
Privilege escalation in Microsoft Exchange Server allows local users to gain higher privileges via untrusted functionality. The retrieved CNA record does not name the affected component or explain how functionality from an untrusted control sphere is included. Exploitation requires existing low-privileged access, and the resulting privilege level is not disclosed.
Summary
What happened
Privilege escalation in Microsoft Exchange Server allows local users to gain higher privileges via untrusted functionality. The retrieved CNA record does not name the affected component or explain how functionality from an untrusted control sphere is included. Exploitation requires existing low-privileged access, and the resulting privilege level is not disclosed.
The record
- CVE
- CVE-2026-87695
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Vendor
- Microsoft Corporation
- Product
- Microsoft Exchange Server 2019 Cumulative Update 14
- Classifications
- CWE-829, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 13, 2026CVE publishedPublication date reported by the CVE source.
- Oct 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.02.0.0 <15.02.1544.050
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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