What is CVE-2021-27351?

CVE-2021-27351 is a medium-severity vulnerability in Telegram, classified under Insufficient Session Expiration. CVSS score: 5.3/10. Published 2021-02-19.

How severe is CVE-2021-27351?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Telegram

CVE-2021-27351

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.

EPSS: 0.008 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Telegram
N/a — versions n/a

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2021-27351?: CVE-2021-27351 is a medium-severity vulnerability in Telegram, classified under Insufficient Session Expiration. CVSS score: 5.3/10. Published 2021-02-19.
How severe is CVE-2021-27351?: Medium severity. CVSS v3 base score is 5.3 out of 10.