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

Published 8 y ago 2018-10-09 · modified 4 mo ago 2026-06-17 · JSON

CVSS

6.8

v3.0 · NVD

CISA KEV

not known exploited

EPSS

0.4%

percentile 37%

Public exploits

none known

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

CISA SSVC assessment

Exploitation: Proof of concept public
Automatable: no
Technical impact: total
Assessed: 23 mo ago 2024-11-14

Exploit prediction (EPSS)

0.43% probability of exploitation in the next 30 days, higher than 37% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	6.8	`CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	4.6	`AV:L/AC:L/Au:N/C:P/I:P/A:P`

Classification

Weakness

CWE-287 Improper Authentication

References

gist.github.com /tanprathan/d286c0d5b02e344606287774304a1ccd · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2018-15543
NVD: CVE-2018-15543

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