CVE-2021-47793

4.6 mediumEPSS 0.5%

Medium (4.6) in telegram telegram desktop. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

4.6 medium

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE: CWE-770
Published: 2026-01-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

telegram:telegram_desktop

References

https://telegram.org
https://www.exploit-db.com/exploits/50247
https://www.vulncheck.com/advisories/telegram-desktop-denial-of-service-poc
https://www.exploit-db.com/exploits/50247

Check your stack JSON