CVE-2021-20748

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-14 · updated 2026-06-17
Weakness: CWE-798

Description

Retty App for Android versions prior to 4.8.13 and Retty App for iOS versions prior to 4.11.14 uses a hard-coded API key for an external service. By exploiting this vulnerability, API key for an external service may be obtained by analyzing data in the app.

Affected products

Retty Inc. Retty App: before 4.8.13; before 4.11.14 — fixed in 4.11.14, 4.8.13

How to fix

Upgrade to a fixed version: Retty Inc. Retty App 4.11.14, 4.8.13. Check the vendor advisory for mitigations.

References

https://drive.google.com/file/d/1PBYqIsK8QxEEhGJ4SEgpY7iZw3RTTDho/view
https://jvn.jp/en/jp/JVN26891339/index.html
https://drive.google.com/file/d/1PBYqIsK8QxEEhGJ4SEgpY7iZw3RTTDho/view
https://jvn.jp/en/jp/JVN26891339/index.html

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