CVE-2021-20748

Name: CVE-2021-20748
Creator: NVD / NIST
Published: 2021-07-14T02:15:07.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2021-20748 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.04%

59.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Retty	Retty	< 4.8.13
Retty	Retty	< 4.11.14

References

https://drive.google.com/file/d/1PBYqIsK8QxEEhGJ4SEgpY7iZw3RTTDho/viewThird Party Advisory
https://jvn.jp/en/jp/JVN26891339/index.htmlThird Party Advisory
https://drive.google.com/file/d/1PBYqIsK8QxEEhGJ4SEgpY7iZw3RTTDho/viewThird Party Advisory
https://jvn.jp/en/jp/JVN26891339/index.htmlThird Party Advisory

Timeline

Published: Jul 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20748?

How severe is CVE-2021-20748?

CVE-2021-20748 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20748?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20748?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST