---
id: "CVE-2026-105510"
page: "https://infrastack.ai/live/CVE-2026-105510"
kind: "vulnerability"
aliases: ["CVE-2026-105510"]
title: "Windows SSTP: use-after-free lets an authorized user gain privileges locally"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "local", "privilege-escalation", "sstp", "windows"]
not_affected_if: ["no-local-users", "unknown"]
published_at: "2026-11-10T19:17:49+00:00"
first_seen_at: "2026-11-10T19:24:17+00:00"
updated_at: "2026-11-11T01:04:20+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105510", "first_seen_at": "2026-11-10T19:24:17+00:00"}, {"source": "analyst", "url": "https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2026-105510", "first_seen_at": "2026-11-11T01:04:20+00:00", "cites": ["https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2026-105510"]}]
exploit_sources: []
---

# Windows SSTP: use-after-free lets an authorized user gain privileges locally

Link for people: https://infrastack.ai/live/CVE-2026-105510 (this .md is for agents)

Use-after-free in Windows SSTP lets a low-privileged local attacker gain SYSTEM, after winning a race condition. Microsoft rates it Important (CVSS 7.0), not exploited, not publicly disclosed, 'Exploitation Less Likely'. Patched in the November 2026 updates.

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

## How to check

Compare the installed Windows build/KB against the November 2026 (2026-Nov) cumulative update for your version in the MSRC Update Guide entry for CVE-2026-105510. The MSRC API does not list builds, so check the Update Guide page directly. Whether SSTP must be enabled is not stated by the source.

## Fix

Microsoft lists this in the November 2026 Patch Tuesday release (customer action required). Install the November 2026 cumulative update for your Windows version; the KB and fixed build numbers are not readable from the MSRC API output, so unknown.

## Timeline

- 2026-11-10T19:24:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-105510
- 2026-11-11T01:04:20+00:00 analyst https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2026-105510 — MSRC API JSON (vendor) read: Important, EoP to SYSTEM, race condition, exploited No, disclosed No, Less Likely. No build/KB list reachable (MSRC page is JS-only), so nothing marked verified. X/search not used; low-signal local EoP.

## Documents

- [advisory] MSRC: CVE-2026-105510 Windows SSTP Elevation of Privilege (2026-Nov) https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2026-105510

## From the sources

Use after free in Windows Secure Socket Tunneling Protocol (SSTP) 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_