Physical reading and tampering of stored data
Published Jul 21, 2026 · Updated Jul 21, 2026
Missing cryptographic processing in Sony FeliCa IC chips shipped in or before 2017 allows physically proximate attackers to read or alter stored data. The public advisories identify a specific operation during cryptographic processing as reducing intended security but do not disclose that operation or the missing step. Exploitation requires physical proximity to the chip, no privileges, and no user interaction; confidentiality and integrity of stored data are affected.
Summary
What happened
Missing cryptographic processing in Sony FeliCa IC chips shipped in or before 2017 allows physically proximate attackers to read or alter stored data. The public advisories identify a specific operation during cryptographic processing as reducing intended security but do not disclose that operation or the missing step. Exploitation requires physical proximity to the chip, no privileges, and no user interaction; confidentiality and integrity of stored data are affected.
The record
- CVE
- CVE-2026-59776
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- Sony Group Corporation
- Product
- FeliCa IC chips
- Classifications
- CWE-325
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 21, 2026CVE publishedPublication date reported by the CVE source.
- Jul 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=shipped in or before 2017
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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