How severe is CVE-2020-5664?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Neuroinformatics Unit, Integrative Computational Brain Science Collaboration Division, Riken Center For Xoonips

CVE-2020-5664

Deserialization of untrusted data vulnerability in XooNIps 3.49 and earlier allows remote attackers to execute arbitrary code via unspecified vectors.

Vulnerability class: Insecure Deserialization

Published 2020-11-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Neuroinformatics Unit, Integrative Computational Brain Science Collaboration Division, Riken Center For Xoonips — versions 3.49 and earlier
Riken Xoonips

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

xoonips.osdn.jp/modules/news/index.php (Release Notes, Vendor Advisory)
jvn.jp/en/vu/JVNVU92053563/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-5664?: CVE-2020-5664 is a critical-severity vulnerability in Neuroinformatics Unit, Integrative Computational Brain Science Collaboration Division, Riken Center For Xoonips, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-11-16.
How severe is CVE-2020-5664?: Critical severity. CVSS v3 base score is 9.8 out of 10.