CVE-2021-20800
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows...
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
- Record
CVE-2021-20800- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
- Record
CVE-2021-20800- Updated
- 2026-11-02
EUVDEUVD-2021-8212 No score
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
- Record
EUVD-2021-8212- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wc8v-fx85-m9p3 No score
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows...
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
- Record
GHSA-wc8v-fx85-m9p3- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20800 is a medium vulnerability (CVSS 5.4) in Cybozu, Inc. Cybozu Remote Service, published October 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 49th percentile. No source names a fixed version.