CVE-2018-15542

Severity: medium (CVSS 6.4 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-10-09 · updated 2026-06-17
Weakness: CWE-287

Description

An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. The Passcode feature allows authentication bypass via runtime manipulation that forces a certain method's return value to true. In other words, an attacker could authenticate with an arbitrary passcode. 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

Affected products

Telegram: 4.8.11

References

https://gist.github.com/tanprathan/18d0f692a2485acfb5693e2f6dabeb5d
https://gist.github.com/tanprathan/18d0f692a2485acfb5693e2f6dabeb5d

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