CVE-2021-20833

Name: CVE-2021-20833
Creator: NVD / NIST
Published: 2021-10-13T09:15:08.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2021-20833 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate.

Metrics

CVSS 3.1

7.4/10

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

EPSS Probability

0.47%

37.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Soda-Inc	Snkrdunk	< 2.2.0

References

https://jvn.jp/en/jp/JVN10168753/index.htmlThird Party Advisory
https://snkrdunk.com/information/37/Mitigation, Vendor Advisory
https://jvn.jp/en/jp/JVN10168753/index.htmlThird Party Advisory
https://snkrdunk.com/information/37/Mitigation, Vendor Advisory

Timeline

Published: Oct 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20833?

How severe is CVE-2021-20833?

CVE-2021-20833 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20833?

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-2021-20833?

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

Scan your code now

Source: NVD / NIST