CVE-2021-47793

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/16/2026

Last Modified1/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

telegram:telegram_desktop

Weaknesses (CWE)

CWE-770

References

https://telegram.org(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/50247(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/telegram-desktop-denial-of-service-poc(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/50247(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.