Vulnerability identifier: #VU50801

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-27204

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Telegram for macOS
Client/Desktop applications / Messaging software

Vendor: Telegram

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the affected software stores the local passcode in cleartext. A local user can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Telegram for macOS: 7.0 - 7.3

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External links
http://www.inputzero.io/2020/12/telegram-privacy-fails-again.html
http://www.youtube.com/watch?v=zEt-_5b4OaA

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.