CVE Catalog

CVE-2021-47793

High
Published: Translated: NVD NIST

Summary

Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an application crash.

Risk Assessment

The risk includes application disruption, potentially leading to loss of productivity and communication unavailability. An attacker can intentionally crash the app for many users.

Recommendation

It is recommended to update Telegram Desktop to the latest patched version. Also, avoid opening suspicious messages and apply network security measures.

Related vulnerabilities

Original NVD description (English source)

Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an application crash.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS