How severe is CVE-2017-2220?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Information-Technology Promotion Agency, Japan (Ipa) Installer Of Casl Ii Simulator(self-Extract Format)

CVE-2017-2220

Untrusted search path vulnerability in Installer of CASL II simulator (self-extract format) allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

Published 2017-07-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Information-Technology Promotion Agency, Japan (Ipa) Installer Of Casl Ii Simulator(self-Extract Format) — versions all versions
Ipa Casl Ii Simulator

Weakness classification (CWE)

CWE-426 — Untrusted Search Path

References

www.jitec.ipa.go.jp/1_20casl2/casl2dl_2017_01.html (Vendor Advisory)
jvn.jp/en/jp/JVN67305782/index.html (VDB Entry, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2017-2220?: CVE-2017-2220 is a high-severity vulnerability in Information-Technology Promotion Agency, Japan (Ipa) Installer Of Casl Ii Simulator(self-Extract Format), classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2017-07-07.
How severe is CVE-2017-2220?: High severity. CVSS v3 base score is 7.8 out of 10.