CVE-2021-47793

Telegram Desktop 2.9.2 - Denial of Service (PoC)

CVSS 4.6 MEDIUMEPSS 0.5%CWE-770

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.6EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

15 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Telegram · Telegram Desktop

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References

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