ZDI-CAN-30207: ZDI-26-757: (0Day) Telegram rlottie Numeric Truncation Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Telegram. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the rlottie library. The issue results from the lack of proper validation of user-supplied data, which can result in a write before the start of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Telegram. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.0. The following CVEs are assigned: CVE-2026-111105.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What must an attacker do to exploit this issue?
The attacker must persuade the target to visit a malicious page or open a malicious file. Successful exploitation can result in arbitrary code execution on an affected Telegram installation.
How severe is this vulnerability?
The vulnerability has a CVSS rating of 7.0 and is tracked as CVE-2026-111105.