JVN#40509781
Vulnerability in certain IC chips of contactless IC card "FeliCa"

Overview

For certain FeliCa IC chips shipped by Sony Corporation in or before 2017, a certain operation during cryptographic processing may compromise the intended security strength.

Products Affected

• Certain FeliCa IC chips shipped in or before 2017

Description

For certain FeliCa IC chips shipped by Sony Corporation in or before 2017, a certain operation during cryptographic processing may compromise the intended security strength.

• Missing cryptographic step (CWE-325)
  • CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Base Score 7.0
  • CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Base Score 6.8
  • CVE-2026-59776

Impact

If the vulnerability is exploited, information stored in the IC chip may be read or tampered with.

Solution

Apply the Workaround
For service providers:

• Assess the impact on your services and implement appropriate countermeasures in accordance with the mitigation guidelines provided by the vendor and the technical documentation available on the vendor's website.

• Manage your IC card appropriately to prevent it from being stolen or skimmed.