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Telegram Desktop Null Pointer Dereference Vulnerability in Bot API Component

Vulnerability

A null pointer dereference vulnerability has been identified in Telegram Desktop versions prior to 6.7.5. This issue arises in the Bot API component, specifically within the RequestButton function of the url_auth_box.cpp file. The vulnerability can be exploited remotely by manipulating the login_url argument.

Impact

Exploitation of this vulnerability leads to a null pointer dereference, which can cause a denial-of-service condition by crashing the application.

Added: May 3, 2026, 4:18 PM
Updated: May 3, 2026, 4:18 PM

Vulnerability Rating

Custom Algorithm
spread
7.8
impact
0.6
exploitability
6.0
remediation
0.0
relevance
7.3
threat
6.4
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.