---
id: "CVE-2026-119990"
page: "https://infrastack.ai/live/CVE-2026-119990"
kind: "vulnerability"
aliases: ["CVE-2026-119990"]
title: "Azure OpenAI: missing authentication lets an unauthorized attacker gain privileges"
severity: "critical"
cvss: 9.8
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["azure", "azure-openai", "cloud-service", "vendor"]
not_affected_if: []
published_at: "2026-11-10T19:20:24+00:00"
first_seen_at: "2026-11-10T19:25:06+00:00"
updated_at: "2026-11-10T19:32:03+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119990", "first_seen_at": "2026-11-10T19:25:06+00:00"}, {"source": "analyst", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119990", "first_seen_at": "2026-11-10T19:32:03+00:00", "cites": ["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119990"]}]
exploit_sources: []
---

# Azure OpenAI: missing authentication lets an unauthorized attacker gain privileges

Link for people: https://infrastack.ai/live/CVE-2026-119990 (this .md is for agents)

Microsoft says Azure OpenAI has a missing-authentication flaw (CWE-306) that lets an unauthenticated attacker send a crafted request over the internet and gain elevated permissions: access orchestration information, modify workflows, or disrupt the service. CVSS 9.8. Microsoft lists it as not exploited and not publicly disclosed, with an official fix; the advisory names no versions and no customer action.

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

## How to check

No customer-side check published. Microsoft's advisory lists no affected versions or builds. Watch the MSRC page for CVE-2026-119990 for an affected-products table or customer instructions.

## Timeline

- 2026-11-10T19:25:06+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119990
- 2026-11-10T19:32:03+00:00 analyst https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119990 — Read MSRC advisory (Nov 10 2026): CWE-306, CVSS 9.8, not exploited, not publicly disclosed, official fix level; no product/build list or customer steps published.

## Documents

- [advisory] MSRC: Azure OpenAI Elevation of Privilege Vulnerability CVE-2026-119990 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119990

## From the sources

Missing authentication for critical function in Azure OpenAI allows an unauthorized 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_