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PatchSiren cyber security CVE debrief

CVE-2026-59776 Sony Corporation CVE debrief

A Missing Cryptographic Step vulnerability exists in certain FeliCa IC chips shipped in or before 2017. If exploited, information stored in the IC chip may be read or tampered with. Defenders should assess exposure, prioritize verification, and consider compensating controls. The vulnerability is described in the CVE and NVD records. Affected product deployments should be confirmed in managed environments and assigned an owner for follow-up. Official advisories or CVE records should be reviewed to validate affected scope, severity, and vendor guidance.

Vendor
Sony Corporation
Product
FeliCa IC chips
CVSS
HIGH 7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-21
Original CVE updated
2026-10-24
Advisory published
2026-07-21
Advisory updated
2026-10-24

Who should care

Defenders responsible for FeliCa IC chip-based systems should assess exposure and prioritize verification. Affected operators, platforms, and security teams should review the vulnerability and consider mitigations. Vulnerability management and security teams should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Why it matters

A Missing Cryptographic Step vulnerability exists in certain FeliCa IC chips shipped in or before 2017. If exploited, information stored in the IC chip may be read or tampered with. Defenders should assess exposure, prioritize verification, and consider compensating controls.

  • Verify affected versions and apply vendor remediation if available
  • Assess exposure and prioritize verification
  • Consider compensating controls to mitigate potential risks

Technical summary

The vulnerability exists in certain FeliCa IC chips shipped in or before 2017. If exploited, information stored in the IC chip may be read or tampered with. Affected product context indicates a need for defenders to assess exposure and prioritize verification. Technical framing without unsupported root-cause or exploit claims suggests a focus on compensating controls.

Defensive priority

Verify affected versions and apply vendor remediation if available.

Recommended defensive actions

  • Verify affected versions and apply vendor remediation if available
  • Assess exposure and prioritize verification
  • Consider compensating controls

Evidence notes

The vulnerability is described in the CVE and NVD records, with additional information from source references. The CVE record was published on 2026-07-21T04:16:51.480Z and has not been modified since then. Evidence limits and known affected scope should be verified by defenders. Source grounding indicates a potential risk of information being read or tampered with.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-59776 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-59776

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-59776 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-59776

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.