Vulnerability in certain IC chips of contactless IC card "FeliCa"
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.
CSIRTS triage
- What
- Certain FeliCa IC chips may compromise the intended security strength during cryptographic processing.
- Who is affected
- Users of FeliCa IC chips shipped by Sony Corporation in or before 2017.
- Urgency
- Remediation is important due to potential security implications, though exploitation status is unclear.
- Action
- Review and assess the security of affected FeliCa IC chips.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://jvn.jp/en/jp/JVN40509781/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-597760.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-59776 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for certain IC chips
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
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