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TI-2021-08853 Aliases CVE-2021-27351GHSA-cc4r-2rwj-vx7x

The Terminate Session feature in the Telegram application through 7.2.1 for Android, and…

Priority LOW 26CWE-613Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-613.

Summary

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.

Why it matters now

EPSS 0.00843 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:telegram:telegram:*:*:*:*:*:unix:*:*up to 2.4.7VulnerableTelegram
cpe:2.3:a:telegram:telegram:*:*:*:*:*:windows:*:*up to 2.4.7VulnerableTelegram
cpe:2.3:a:telegram:telegram:*:*:*:*:*:android:*:*up to 7.2.1VulnerableTelegram
  • cpe:2.3:a:telegram:telegram:*:*:*:*:*:unix:*:* Versions up to 2.4.7 Vulnerable ·Telegram
  • cpe:2.3:a:telegram:telegram:*:*:*:*:*:windows:*:* Versions up to 2.4.7 Vulnerable ·Telegram
  • cpe:2.3:a:telegram:telegram:*:*:*:*:*:android:*:* Versions up to 7.2.1 Vulnerable ·Telegram

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27351
  2. 2026-10-03 Alias added: GHSA-cc4r-2rwj-vx7x

References

Advisory 2

  • TI-2018-11088 An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. CVSS 3.0MEDIUM 6.8
  • TI-2021-10892 The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of… CVSS 3.1MEDIUM 5.7
  • TI-2023-11787 Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or… CVSS 3.1MEDIUM 5.5
  • TI-2019-07370 Telegram Desktop before 1.5.12 on Windows, and the Telegram applications for Android… CVSS 3.0HIGH 8.8
  • TI-2018-14480 The "secret chat" feature in Telegram 4.9.1 for Android has a "side channel" in which… CVSS 3.0HIGH 8.1
  • TI-2024-06509 Improper multimedia file attachment validation in Telegram for Android app CVSS 4.0HIGH 7.1
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences