GCD AI RADAR
incidents/AIR-2026-0354

Storm-2139 Azure OpenAI Guardrail Bypass

Attack on AI3 Confirmed exploitationJailbreak

Threat actors used stolen credentials and custom tooling to bypass safety guardrails on Azure OpenAI Services. The operation generated illicit and harmful synthetic content, prompting Microsoft intervention.

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Jailbreak
    A user deliberately bypasses a model's safety or policy controls through crafted prompts.
owasp llm top 10
mitre atlas
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
3 · Confirmed exploitation
Used against real targets; limited or unclear impact.
targets
Microsoft
products
Azure OpenAI Services
incident date
Dec 2024 (approx.)
first reported
30 Jun 2026
origin
MITRE ATLAS
Derived from MITRE ATLAS (Apache 2.0, © MITRE).
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
storm-2139 · jailbreak · azure-openai
record
created 2026-10-18 06:55Z · updated 2026-10-18 06:55Z · json

Sources · 4

  1. 2026-06-30
    Storm-2139 Azure OpenAI Guardrail Bypass
    MITRE ATLAS · atlas.mitre.org/studies/AML.CS0057
  2. 2026-06-30
    Taking legal action to protect the public from abusive AI-generated content
    Microsoft Security · blogs.microsoft.com/on-the-issues/2025/01/10/taking-legal-action-to-protect-the-
  3. 2026-06-30
    Disrupting a global cybercrime network abusing generative AI
    Microsoft Security · blogs.microsoft.com/on-the-issues/2025/02/27/disrupting-cybercrime-abusing-gen-a
  4. 2026-06-30
    How Microsoft is taking down AI hackers who create harmful images of celebrities and others
    Microsoft Security · news.microsoft.com/source/features/ai/how-microsoft-is-taking-down-ai-hackers-wh

Titles and links belong to their publishers. The summary above is written by GCD AI RADAR in its own words; data is CC BY-SA 4.0.

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