What is CVE-2021-38241?

CVE-2021-38241 is a critical-severity vulnerability in Ruoyi, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2022-12-16.

How severe is CVE-2021-38241?

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

Deserialization in Ruoyi

CVE-2021-38241

Deserialization issue discovered in Ruoyi before 4.6.1 allows remote attackers to run arbitrary code via weak cipher in Shiro framework.

Vulnerability class: Insecure Deserialization

Published 2022-12-16 · 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: 0.011 (63.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.011 · change: +0.000

Affected products

Ruoyi

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.du1ge.com/archives/CVE-2021-38241 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-38241?: CVE-2021-38241 is a critical-severity vulnerability in Ruoyi, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2022-12-16.
How severe is CVE-2021-38241?: Critical severity. CVSS v3 base score is 9.8 out of 10.