Sony FeliCa IC chips up to 2017 Cryptographic missing cryptographic step

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k2.18

Summaryinfo

A vulnerability was found in Sony FeliCa IC chips up to 2017 and classified as problematic. The affected element is an unknown function of the component Cryptographic. Such manipulation leads to missing cryptographic step. This vulnerability is traded as CVE-2026-59776. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Sony FeliCa IC chips up to 2017 and classified as problematic. Affected by this issue is an unknown code of the component Cryptographic. The manipulation with an unknown input leads to a missing cryptographic step vulnerability. Using CWE to declare the problem leads to CWE-325. The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at sony.co.jp. This vulnerability is handled as CVE-2026-59776 since 07/09/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/21/2026). The MITRE ATT&CK project declares the attack technique as T1600.

Upgrading to version 2017 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-46148). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing cryptographic step
CWE: CWE-325
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: FeliCa IC chips 2017

Timelineinfo

07/09/2026 CVE reserved
07/21/2026 +12 days Advisory disclosed
07/21/2026 +0 days VulDB entry created
07/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: sony.co.jp
Status: Confirmed

CVE: CVE-2026-59776 (🔒)
GCVE (CVE): GCVE-0-2026-59776
GCVE (VulDB): GCVE-100-380804
EUVD: 🔒

Entryinfo

Created: 07/21/2026 05:37
Updated: 07/21/2026 12:35
Changes: 07/21/2026 05:37 (53), 07/21/2026 12:35 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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