What is CVE-2017-2158?

CVE-2017-2158 is a low-severity vulnerability in Lhaplus Project, classified under Improper Input Validation. CVSS score: 3.3/10. Published 2018-01-12.

How severe is CVE-2017-2158?

Low severity. CVSS v3 base score is 3.3 out of 10.

Improper input validation in Lhaplus Project

CVE-2017-2158

Improper verification when expanding ZIP64 archives in Lhaplus versions 1.73 and earlier may lead to unintended contents to be extracted from a specially crafted ZIP64 archive.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.7th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Lhaplus Project
Schezo Lhaplus — versions Version 1.73 and earlier

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

jvn.jp/en/jp/JVN57842148/index.html (VDB Entry, Third Party Advisory, third-party-advisory)
www7a.biglobe.ne.jp/~schezo/JVN57842148.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-2158?: CVE-2017-2158 is a low-severity vulnerability in Lhaplus Project, classified under Improper Input Validation. CVSS score: 3.3/10. Published 2018-01-12.
How severe is CVE-2017-2158?: Low severity. CVSS v3 base score is 3.3 out of 10.