---
id: "CVE-2026-88111"
page: "https://infrastack.ai/live/CVE-2026-88111"
kind: "vulnerability"
aliases: ["CVE-2026-88111"]
title: "Microsoft SQL Server: heap overflow lets an authorized user run code"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["database", "runtime", "sql-server", "windows"]
not_affected_if: ["no-sql-server-installed"]
published_at: "2026-11-10T19:21:26+00:00"
first_seen_at: "2026-11-10T19:25:18+00:00"
updated_at: "2026-11-10T21:07:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88111", "first_seen_at": "2026-11-10T19:25:18+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T21:07:27+00:00"}]
exploit_sources: []
---

# Microsoft SQL Server: heap overflow lets an authorized user run code

Link for people: https://infrastack.ai/live/CVE-2026-88111 (this .md is for agents)

A heap-based buffer overflow in Microsoft SQL Server lets an attacker who already has valid access run code over the network. The sources give no affected versions or fix details.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T19:25:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-88111
- 2026-11-10T21:07:27+00:00 analyst — Could not confirm affected versions or fix. MSRC page is JS-only (empty via web-cli), the CVRF API returned only the 2026-Nov index, NVD returned nothing, and the Oct 2026 KB5126934 list and the Nov 2026 SQL Server CVE listing (kerteszmihaly mirror of MSRC) do not include this ID. No MSRC-confirmed KB or build; nothing verified. Needs the MSRC entry rendered (browser) or the Nov KBs' CVE lists (KB5129300, KB5132747 etc.) to settle it.

## From the sources

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_