---
id: "CVE-2026-112797"
page: "https://infrastack.ai/live/CVE-2026-112797"
kind: "vulnerability"
aliases: ["CVE-2026-112797"]
title: "Windows Print Spooler: use-after-free lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 / 11 / Windows Server", "fixed": ["10.0.14393.9688", "10.0.17763.9487", "10.0.19044.7846", "10.0.19045.7846", "10.0.22631.7711", "10.0.26100.9974", "10.0.26200.9974", "10.0.28000.3501", "10.0.26300.9974", "10.0.20348.5870", "10.0.26100.33822"], "affected": "Win10 1607 < 10.0.14393.9688; 1809 < 10.0.17763.9487; 21H2 < 10.0.19044.7846; 22H2 < 10.0.19045.7846; Win11 23H2 < 10.0.22631.7711; 24H2 < 10.0.26100.9974; 25H2 < 10.0.26200.9974; 26H1 < 10.0.28000.3501; 26H2 < 10.0.26300.9974; Server 2016 < 10.0.14393.9688; 2019 < 10.0.17763.9487; 2022 < 10.0.20348.5870; 2025 < 10.0.26100.33822", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["infrastructure", "local-privilege-escalation", "print-spooler", "title-review", "windows"]
not_affected_if: ["no-local-users"]
published_at: "2026-11-10T19:18:41+00:00"
first_seen_at: "2026-11-10T19:24:33+00:00"
updated_at: "2026-11-11T00:05:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112797", "first_seen_at": "2026-11-10T19:24:33+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112797", "first_seen_at": "2026-11-11T00:05:49+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/CVE-2026-112797"]}]
exploit_sources: []
---

# Windows Print Spooler: use-after-free lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-112797 (this .md is for agents)

A use-after-free bug in the Windows Print Spooler components lets an authorized local user elevate their privileges. An attacker who already has a local account can gain higher system rights.

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

## Affected

- vendor:Windows 10 / 11 / Windows Server affected Win10 1607 < 10.0.14393.9688; 1809 < 10.0.17763.9487; 21H2 < 10.0.19044.7846; 22H2 < 10.0.19045.7846; Win11 23H2 < 10.0.22631.7711; 24H2 < 10.0.26100.9974; 25H2 < 10.0.26200.9974; 26H1 < 10.0.28000.3501; 26H2 < 10.0.26300.9974; Server 2016 < 10.0.14393.9688; 2019 < 10.0.17763.9487; 2022 < 10.0.20348.5870; 2025 < 10.0.26100.33822 fixed 10.0.14393.9688, 10.0.17763.9487, 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711, 10.0.26100.9974, 10.0.26200.9974, 10.0.28000.3501, 10.0.26300.9974, 10.0.20348.5870, 10.0.26100.33822

## How to check

Run winver or PowerShell [System.Environment]::OSVersion.Version and compare the build with the fixed builds listed; lower means exposed. Get-Service Spooler shows whether Print Spooler runs; if it is stopped or disabled and not needed, the local attack path through it is closed (not confirmed by Microsoft here).

## Fix

Install the November 2026 Windows cumulative update that brings the build to at least the fixed build for your version (e.g. Win 11 24H2/25H2 10.0.26100/26200.9974, Win 10 22H2 10.0.19045.7846, Server 2022 10.0.20348.5870, Server 2025 10.0.26100.33822). KB numbers not confirmed; see MSRC page.

## Timeline

- 2026-11-10T19:24:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112797
- 2026-11-11T00:05:49+00:00 analyst https://nvd.nist.gov/vuln/detail/CVE-2026-112797 — Microsoft CNA affected builds read via NVD; MSRC page is JS-only and returned nothing, so no KB numbers and nothing marked verified. No exploitation or PoC seen.

## Documents

- [describes] NVD CVE-2026-112797 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/CVE-2026-112797

## From the sources

Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

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