CVE-2021-20764
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows...
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.
- Record
CVE-2021-20764- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.
- Record
CVE-2021-20764- Updated
- 2026-11-02
EUVDEUVD-2021-8176 No score
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.
- Record
EUVD-2021-8176- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w75q-4cfj-fmmg No score
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows...
Improper input validation vulnerability in Attaching Files of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker to alter the data of Attaching Files.
- Record
GHSA-w75q-4cfj-fmmg- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20764 is a medium vulnerability (CVSS 5.3) in Cybozu Garoon, published August 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.99%, the 62nd percentile. No source names a fixed version.