CVE-2026-88088Hinoki check available

Local privilege elevation for authorized users

Published Oct 13, 2026 · Updated Oct 13, 2026

Integer overflow in Microsoft SQL Server 2019, 2022, and 2025 allows local users with existing authorization to elevate privileges. The CVE record does not identify the affected function, attacker-controlled input, or arithmetic operation, and the retrieved update descriptions do not explicitly link individual fixes to this CVE. Existing low privileges are required; the resulting privilege level is not specified.

CVSS severity7.0
High
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Integer overflow in Microsoft SQL Server 2019, 2022, and 2025 allows local users with existing authorization to elevate privileges. The CVE record does not identify the affected function, attacker-controlled input, or arithmetic operation, and the retrieved update descriptions do not explicitly link individual fixes to this CVE. Existing low privileges are required; the resulting privilege level is not specified.

The record

CVE
CVE-2026-88088
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Microsoft Corporation
Product
Microsoft SQL Server 2022
Classifications
CWE-190, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. 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.

  1. Affected versionversion=16.0.0 <16.0.1210.3
  2. Affected versionversion=16.0.4003.1 <16.0.4305.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft Corporation · Microsoft SQL Server 2022version=16.0.0 <16.0.1210.3; version=16.0.4003.1 <16.0.4305.5
Microsoft Corporation · Microsoft SQL Server 2019version=15.0.0 <15.0.2200.2; version=15.0.4003.23 <15.0.4500.2
Microsoft Corporation · Microsoft SQL Server 2025version=-; version=17.0.1050.2 <17.0.1145.4; version=17.0.4006.2 <17.0.5015.4

Published CVSS scores

7.0MicrosoftCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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