CVE-2021-20631

6.5 mediumEPSS 0.8%

Medium (6.5) in cybozu office. EPSS 0.8% chance of exploitation in the next 30 days.

Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2021-03-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cybozu:office

References

https://jvn.jp/en/jp/JVN45797538/index.html
https://kb.cybozu.support/article/36871/
https://jvn.jp/en/jp/JVN45797538/index.html
https://kb.cybozu.support/article/36871/

Check your stack JSON