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AII-1001-08693
ConfirmedA court, a regulator or the organization itself has stated the core facts, or the record cites a court or regulator source.

Multiple Model Guardrail Jailbreak via Memory Dump Simulation

A guardrail jailbreak vulnerability affecting multiple AI models has been disclosed. The attack uses terminal environment simulation and malware analysis framing to bypass inference restrictions and extract information hazards.

19 February 2026 Β· DeepSeek Β· Security and cyberattacks
19 February 2026
AII-1001-08693View source β†—
Quick facts
Category
Security and cyberattacks
Source
0din.ai
Date
19 February 2026
Drafted by
Raidu Incident Detection

What happened

A guardrail jailbreak vulnerability has been discovered affecting multiple models including DeepSeek V3, Google Gemini 2.0 Flash, OpenAI GPT-4, GPT-4o, and GPT-4o mini.

The flaw manifests through a combination of terminal environment simulation and malware analysis framing, where the attacker requests extraction of strings from a purported memory dump.

By embedding the request within a technical security analysis context and using the strings command output format, the technique allows the attacker to bypass inference restrictions around providing information hazards and violating laws.

Classification

Category
Security and cyberattacks
Industry
Digital security
Harm status
Potential harm
Intent
Intentional
Timing
Post-deployment
Harm types
Public interest
Harmed
General public
Failure modes
Jailbreak, Manipulation or dark pattern
Consequences
None recorded
AI systems
DeepSeek V3, Google Gemini 2.0 Flash, OpenAI GPT-4, OpenAI GPT-4o

Sources and evidence

This record was researched and written by the Index, based on the following original reporting.

0din.ai
0din.ai Disclosure