CVE-2021-47793 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Telegram	Telegram Desktop	2.9.2

Related Weaknesses (CWE)

CWE-770

References

https://telegram.orgProduct
https://www.exploit-db.com/exploits/50247Exploit
https://www.vulncheck.com/advisories/telegram-desktop-denial-of-service-pocThird Party Advisory
https://www.exploit-db.com/exploits/50247Exploit

FAQ

What is CVE-2021-47793?

CVE-2021-47793 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...

How severe is CVE-2021-47793?

CVE-2021-47793 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-47793?

Check the references section above for vendor advisories and patch information. Affected products include: Telegram Telegram Desktop.