What’s Vulnerable › Vulnerabilities

CVE-2021-20631

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-18 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• Cybozu, Inc. Cybozu Office: from 10.0.0 through 10.8.4

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/

Get alerted when CVE-2021-20631 or the next vulnerability affects your stack