What is CVE-2020-3938?

CVE-2020-3938 is a critical-severity vulnerability in Changing Syuan-Gu-Da-Shih, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2020-02-04.

How severe is CVE-2020-3938?

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

SSRF in Changing Syuan-Gu-Da-Shih

CVE-2020-3938

SysJust Syuan-Gu-Da-Shih, versions before 20191223, contain vulnerability of Request Forgery, allowing attackers to launch inquiries into network architecture or system files of the server via forged inquests.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2020-02-04 · 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: 0.015 (72.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Changing Syuan-Gu-Da-Shih — versions 0
Sysjust Syuan-Gu-Da-Shin

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

tvn.twcert.org.tw/taiwanvn/TVN-201910014 (Third Party Advisory)
www.chtsecurity.com/news/a791f509-9782-4be1-b71f-22fc619f8215 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-3938?: CVE-2020-3938 is a critical-severity vulnerability in Changing Syuan-Gu-Da-Shih, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2020-02-04.
How severe is CVE-2020-3938?: Critical severity. CVSS v3 base score is 9.8 out of 10.