Medium severity · published Oct 12, 2026
CVE-2026-21128
Improper input validation in CreditCardRegisterActivity of Samsung Checkout prior to version 5.1.03.1 allows local attackers to launch arbitrary activity with Samsung Checkout…
5.1
CVSS
0.1%
EPSS
No
On KEV
Description
Improper input validation in CreditCardRegisterActivity of Samsung Checkout prior to version 5.1.03.1 allows local attackers to launch arbitrary activity with Samsung Checkout privileges.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Samsung Checkout · Samsung Mobile
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21128
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21128
security.samsungmobile.com
https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=10
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