---
id: "CVE-2026-122164"
page: "https://infrastack.ai/live/CVE-2026-122164"
kind: "vulnerability"
aliases: ["CVE-2026-122164"]
title: "Windows Kerberos: weak authentication lets an authorized user gain higher privileges"
severity: "high"
cvss: 8.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["active-directory", "infrastructure", "kerberos", "windows"]
not_affected_if: ["no-domain-accounts"]
published_at: "2026-11-10T19:20:33+00:00"
first_seen_at: "2026-11-10T19:25:09+00:00"
updated_at: "2026-11-10T19:36:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-122164", "first_seen_at": "2026-11-10T19:25:09+00:00"}]
exploit_sources: []
---

# Windows Kerberos: weak authentication lets an authorized user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-122164 (this .md is for agents)

Windows Kerberos, the domain login protocol, has a weak authentication flaw. An attacker who already holds a valid account can elevate their privileges over the network.

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

## How to check

- Confirm the Windows build is in the affected range from Microsoft's security update guide for CVE-2026-122164 (unknown from the sources)
- Check whether Windows Update shows the latest cumulative update installed (unknown from the sources)

## Timeline

- 2026-11-10T19:25:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-122164

## From the sources

Weak authentication in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

---

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