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TI-2018-11088 Aliases CVE-2018-15543GHSA-4cfw-g6m2-82xj

An issue was discovered in the org.telegram.messenger application 4.8.11 for Android.

Priority HIGH 65CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. The FingerprintManager class for Biometric validation allows authentication bypass through the callback method from onAuthenticationFailed to onAuthenticationSucceeded with null, because the fingerprint API in conjunction with the Android keyGenerator class is not implemented. In other words, an attacker could authenticate with an arbitrary fingerprint. NOTE: the vendor indicates that this is not an attack of interest within the context of their threat model, which excludes Android devices on which rooting has occurred

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00428 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

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

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:telegram:telegram:4.8.11:*:*:*:*:android:*:*4.8.11VulnerableTelegram
  • cpe:2.3:a:telegram:telegram:4.8.11:*:*:*:*:android:*:* Versions 4.8.11 Vulnerable ·Telegram

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-15543
  2. 2026-10-03 Alias added: GHSA-4cfw-g6m2-82xj

References

Advisory 1

  • 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
  • TI-2021-11472 Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected… CVSS 3.1HIGH 7.1
See all 26 →

Sources

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