This security advisory describes one low risk vulnerability.
The vulnerability allows an attacker to bypass certain security restrictions.
The vulnerability exists due "delete for" feature does not delete images and media files from the Telegram Images directory, removing them from the chat window only. As a result, it is possible to gain access to files that were deleted via the UI interface.Mitigation
Install updates from vendor's website.Vulnerable software versions
Telegram for Android: 4.9.0, 5.8.0, 5.9.0, 5.10.0CPE
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.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to open a a specially crafted app.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.