Local privilege escalation for high-privileged users
Published Oct 13, 2026 · Updated Oct 13, 2026
Heap-based buffer overflow in Microsoft SQL Server 2017, 2019, 2022, and 2025 allows local users to elevate privileges. The available Microsoft record does not identify the affected component, input, or incorrect memory operation beyond the heap-overflow classification. Exploitation requires existing high privileges and local access; the resulting privilege level is not specified.
Summary
What happened
Heap-based buffer overflow in Microsoft SQL Server 2017, 2019, 2022, and 2025 allows local users to elevate privileges. The available Microsoft record does not identify the affected component, input, or incorrect memory operation beyond the heap-overflow classification. Exploitation requires existing high privileges and local access; the resulting privilege level is not specified.
The record
- CVE
- CVE-2026-88085
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Vendor
- Microsoft Corporation
- Product
- Microsoft SQL Server 2022
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- admin
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=16.0.0 <16.0.1210.3
- Affected versionversion=16.0.4003.1 <16.0.4305.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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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