CVE-2026-21130: Samsung Checkout improper input validation in activity launch

CVE-2026-21130 · Severity: info · Published 2026-10-12

Samsung Checkout is a mobile payment application that processes financial transactions on Samsung devices. A flaw in its input validation allows attackers with local access to launch arbitrary activities with the app's elevated privileges, potentially enabling fraudulent transactions or data theft.

Technologies: Samsung Checkout. Vendors: Samsung.

Quick answers

Is CVE-2026-21130 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-21130 being exploited in the wild.
How severe is CVE-2026-21130?
Informational severity, published 12 October 2026.
Which products and versions are affected?
Samsung Checkout prior to 5.1.03.1.
Is there a fix for CVE-2026-21130?
Yes: fixed in 5.1.03.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-21130 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-21130?
Check whether you run Samsung Checkout at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 5.1.03.1

Technical details

Improper input validation in the CreditCardRetrieveActivity component of Samsung Checkout allows local attackers to launch arbitrary activities with Samsung Checkout privileges. The vulnerability requires local access to the device. A patch adding proper input validation is available in version 5.1.03.1.

Affected products

  • Samsung Checkout prior to 5.1.03.1

Timeline

  • 2026-10-12: disclosed

References

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