Skip to content
Submit incident
AII-1002-10741
Well documentedThree or more independent publishers report the core facts.Supporting sources are pending verification.

Lenovo's Lena AI chatbot vulnerable to prompt injection attacks

Cybernews researchers discovered that Lenovo's Lena customer service chatbot could be manipulated via prompt injection to disclose customer agent session cookies, potentially enabling attackers to run malware, steal data, or move laterally through corporate networks.

18 August 2025 Β· Lenovo Β· Security and cyberattacks
18 August 2025
AII-1002-10741
Quick facts
Category
Security and cyberattacks
Country
China
Date
18 August 2025
Drafted by
Raidu Incident Detection

What happened

Cybernews researchers discovered a flaw in Lenovo's customer service AI chatbot, Lena, which could be manipulated using a single carefully-crafted prompt to disclose customer agent session cookies.

Reported impact

The exposed session cookies opened up the possibility of multiple lines of attack, including dropping backdoors, stealing data, and laterally moving through corporate networks.

Classification

Category
Security and cyberattacks
Industry
Consumer services
Country
China
Harm status
Potential harm
Intent
Unintentional
Timing
Post-deployment
Harm types
Economic or property, Reputational
Harmed
Business, Consumers
Failure modes
Data leak, Manipulation or dark pattern, Prompt injection
Consequences
None recorded
AI systems
Lena

Sources and evidence

Sources not yet published

This record was researched and written by the Index from original reporting. Its sources are still being verified by an editor, and they are listed here once that check is complete. Until then the record carries no reviewer.

How sources are verifiedSuggest a source for this incident