What is CVE-2017-10857?

CVE-2017-10857 is a medium-severity vulnerability in Cybozu Office, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2017-10-12.

How severe is CVE-2017-10857?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Privilege escalation in Cybozu Office

CVE-2017-10857

Cybozu Office 10.0.0 to 10.6.1 allows authenticated attackers to bypass access restriction to perform arbitrary actions via "Cabinet" function.

Vulnerability class: Privilege Escalation

Published 2017-10-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.5% 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

Cybozu Office — versions 10.0.0, 10.0.1, 10.0.2
Cybozu, Inc. Cybozu Office — versions 10.0.0 to 10.6.1

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

support.cybozu.com/ja-jp/article/9811 (Vendor Advisory)
jvn.jp/en/jp/JVN14658424/index.html (VDB Entry, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2017-10857?: CVE-2017-10857 is a medium-severity vulnerability in Cybozu Office, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2017-10-12.
How severe is CVE-2017-10857?: Medium severity. CVSS v3 base score is 4.3 out of 10.