CVE-2026-59776

Missing Cryptographic Step in Sony FeliCa IC Chips Enables Data Breach

Published Jul 21, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Description
Missing Cryptographic Step (CWE-325) vulnerability exists in certain FeliCa IC chips shipped in or before 2017. If the vulnerability is exploited, information stored in the IC chip may be read or tampered with.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Missing Cryptographic Step in Sony FeliCa IC Chips Enables Data Breach
Type Values Removed Values Added
Title Missing Cryptographic Step Allows Unauthorized Access to FeliCa IC Chip Data
Type Values Removed Values Added
Title Missing Cryptographic Step Allows Unauthorized Access to FeliCa IC Chip Data
Type Values Removed Values Added
First Time appeared Sony
Sony felica Ic Chips
Vendors & Products Sony
Sony felica Ic Chips
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Missing Cryptographic Step (CWE-325) vulnerability exists in certain FeliCa IC chips shipped in or before 2017. If the vulnerability is exploited, information stored in the IC chip may be read or tampered with.
Weaknesses CWE-325
References
Metrics cvssV3_0

{'score': 6.8, 'vector': 'CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Jul 21, 2026, 1:26 PM
Reserved
Jul 9, 2026, 8:23 AM
Status
Deferred
Published
Jul 21, 2026, 4:16 AM
Modified
Oct 24, 2026, 8:10 PM