CVE-2021-27351

MEDIUM

Published Feb 19, 20215y ago · Modified Jun 17, 20262w ago

5.3 CVSS 3.1

Medium

Published Feb 19, 2021 5y ago

Last Modified Jun 17, 2026 2w ago

Description

The Terminate Session feature in the Telegram application through 7.2.1 for Android, and through 2.4.7 for Windows and UNIX, fails to invalidate a recently active session.

CVSS Details

Base Score

5.3

Exploitability

3.9

Impact

1.4

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity Low

Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-613

Affected Products 3

Vendor	Product	Version	Range
telegram	telegram	*	≤2.4.7
telegram	telegram	*	≤2.4.7
telegram	telegram	*	≤7.2.1

References 2

0ffsecninja.github.io https://0ffsecninja.github.io/Telegram:CVE-2021-2735.html

Third Party Advisory
security.gentoo.org https://security.gentoo.org/glsa/202105-07

Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.