Unrated severityOSV Advisory· Published Jan 15, 2026· Updated Mar 5, 2026
Telegram Desktop 2.9.2 - Denial of Service (PoC)
CVE-2021-47793
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.
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Affected products
1- Range: v0.10.1, v0.10.14, v0.10.15, …
Patches
Vulnerability mechanics
References
3- www.exploit-db.com/exploits/50247mitreexploit
- www.vulncheck.com/advisories/telegram-desktop-denial-of-service-pocmitrethird-party-advisory
- telegram.orgmitreproduct
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