It’s a mystery … alleged unpatched Telegram zero-day allows device takeover, but Telegram denies

Security Affairs

March 30, 2026 at 2:07 PM

Overview

A newly disclosed vulnerability in Telegram could allow attackers to execute code on users' devices without any interaction, making it a significant security risk. This flaw, identified by researcher Michael DePlante and tracked as ZDI-CAN-30207, has a CVSS score of 9.8, indicating its severity. Telegram has denied the existence of this issue, which raises concerns about user safety and device security. If confirmed, this vulnerability could affect millions of users who rely on Telegram for messaging. Users should remain vigilant and follow updates from Telegram regarding this potential threat.

Key Takeaways

Affected Systems: Telegram messaging app
Timeline: Newly disclosed

Original Article Summary

A critical Telegram flaw could allow zero-click remote code execution on devices, but Telegram denies it. Researcher Michael DePlante (@izobashi) of TrendAI Zero Day disclosed a new Telegram vulnerability through Zero Day Initiative (ZDI). The vulnerability, tracked as ZDI-CAN-30207 (CVSS score of 9.8) allows attackers to execute code on targeted devices without any user interaction. […]

Impact

Telegram messaging app

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Newly disclosed

Remediation

Not specified

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Zero-day, Vulnerability, Critical.

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