What’s Vulnerable › Vulnerabilities

CVE-2021-27351

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-19 · updated 2026-06-17
• Weakness: CWE-613

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.

Affected products

• Telegram: through 2.4.7; through 7.2.1

References

• https://0ffsecninja.github.io/Telegram:CVE-2021-2735.html
• https://security.gentoo.org/glsa/202105-07
• https://0ffsecninja.github.io/Telegram:CVE-2021-2735.html
• https://security.gentoo.org/glsa/202105-07

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