What is CVE-2018-0659?

CVE-2018-0659 is a medium-severity vulnerability in Hibara Attachecase, classified under Path Traversal. CVSS score: 5.5/10. Published 2018-09-07.

How severe is CVE-2018-0659?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Path Traversal in Hibara Attachecase

CVE-2018-0659

Directory traversal vulnerability in ver.2.8.4.0 and earlier and ver.3.3.0.0 and earlier allows an attacker to create or overwrite existing files via specially crafted ATC file.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2018-09-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Hibara Attachecase
Hibara Software Attachecase — versions ver.2.8.4.0 and earlier and ver.3.3.0.0 and earlier

Weakness classification (CWE)

CWE-22 — Path Traversal

References

hibara.org/software/attachecase/ (Release Notes, Vendor Advisory)
jvn.jp/en/jp/JVN62121133/index.html (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2018-0659?: CVE-2018-0659 is a medium-severity vulnerability in Hibara Attachecase, classified under Path Traversal. CVSS score: 5.5/10. Published 2018-09-07.
How severe is CVE-2018-0659?: Medium severity. CVSS v3 base score is 5.5 out of 10.