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TI-2026-70851 Aliases CVE-2026-21129GHSA-x2cq-w578-xxmh

Samsung Checkout Input Validation Flaw Enables Arbitrary Activity Launch

Priority LOW 22CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Samsung Checkout before version 5.1.03.1 contains an improper input validation flaw (CWE-20) in GuestCreditCardRegisterActivity. A local attacker can launch an arbitrary activity with Samsung Checkout privileges. The source describes no user interaction and no authentication requirement beyond local access.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Improper input validation in GuestCreditCardRegisterActivity of Samsung Checkout prior to version 5.1.03.1 allows local attackers to launch an arbitrary activity with Samsung Checkout privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00111 1st percentileScored 2026-11-07
Fix Fixed Samsung Checkout (Samsung Mobile): 5.1.03.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SamsungSamsung Checkout—5.1.03.1Patch availableCNA
  • Samsung Checkout VendorSamsung Affected — Fixed in 5.1.03.1 Patch available CNA

Remediation

Update Samsung Checkout to version 5.1.03.1 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Samsung Checkout (Samsung Mobile) Fixed in 5.1.03.1

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-21129
  2. 2026-10-12 Alias added: GHSA-x2cq-w578-xxmh
  3. 2026-10-16 Weakness changed · CISA ADP
  4. 2026-10-16 CISA SSVC decision points changed

References

Other 1

  • TI-2025-15039 Out-of-bounds write in Samsung Mobile Devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-15038 Out-of-bounds write in Samsung Mobile Devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-04133 Path traversal in Samsung MagicINFO 9 Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-06858 Path traversal in Samsung MagicINFO 9 Server KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-00916 Integer overflow in Adobe Flash Player before 18.0.0.333 and 19.x through 21.x before… KEVCVSS 3.1HIGH 8.8
  • TI-2022-06595 An improper check or handling of exceptional conditions in NPU driver prior to SMR… KEVCVSS 3.1HIGH 7.8
See all 2043 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences