CVE-2026-21129: CWE-20: Improper Input Validation in Samsung Mobile Samsung Checkout
Description
CVE-2026-21129 is a medium severity vulnerability in Samsung Checkout prior to version 5.1.03.1. It involves improper input validation in the GuestCreditCardRegisterActivity component, which allows local attackers to launch arbitrary activities with Samsung Checkout privileges.
CVSS v4.0
Score 5.1medium
Affected software
Samsung Mobile
Samsung Checkout
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper input validation in the GuestCreditCardRegisterActivity of Samsung Checkout versions before 5.1.03.1. Exploiting this flaw, a local attacker can trigger arbitrary activities within the Samsung Checkout application, potentially leveraging its privileges. The CVSS 4.0 base score is 5.1, indicating a medium impact with local attack vector and low complexity.
Potential Impact
A local attacker can exploit this vulnerability to launch arbitrary activities with the privileges of Samsung Checkout. This could lead to unauthorized actions within the application context but does not require user interaction or elevated privileges. The impact is limited to the scope of Samsung Checkout's privileges on the device.
Mitigation Recommendations
No explicit patch or remediation information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to trusted users and monitor for suspicious activity related to Samsung Checkout.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SamsungMobile
- Date Reserved
- 2025-12-11T01:33:35.833Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acc6a3e2cdf04f656613732
Added to database: 10/12/2026, 05:03:58 UTC
Last enriched: 10/12/2026, 05:19:01 UTC
Last updated: 10/12/2026, 18:57:56 UTC
Views: 18
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