Cross-site scripting in Cybozu, Inc. Cybozu Office
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Cross-site scripting vulnerability in Address Book of Cybozu Office 10.0.0 to 10.8.4 allows remote attackers to inject an arbitrary script via unspecified vectors. Note that this vulnerability occurs only when using Mozilla Firefox.
Why it matters now
EPSS 0.00839 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cybozu, Inc. | Cybozu Office | 10.0.0 to 10.8.4 | — | No fix listed | CNA |
- Cybozu Office VendorCybozu, Inc. Affected 10.0.0 to 10.8.4 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cybozu:office:*:*:*:*:*:*:*:* | 10.0.0 – 10.8.4 | Vulnerable | Cybozu, Inc. |
| cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mozilla |
- cpe:2.3:a:cybozu:office:*:*:*:*:*:*:*:* Versions 10.0.0 – 10.8.4 Vulnerable ·Cybozu, Inc.
- cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mozilla
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20628
- 2026-10-03 Alias added: GHSA-6g4q-mgfw-5mhv
References
More Cybozu, Inc. Office vulnerabilities
- TI-2014-04330 Buffer overflow in Cybozu Office 9 and 10 before 10.1.0, Mailwise 4 and 5 before 5.1.4… CVSS 2.0HIGH 9.0
- TI-2016-01055 Multiple cross-site request forgery (CSRF) vulnerabilities in Cybozu Office 9.9.0 through… CVSS 3.0HIGH 8.8
- TI-2018-00659 Path traversal in Cybozu, Inc. Cybozu Office CVSS 3.0HIGH 7.5
- TI-2018-00658 Path traversal in Cybozu, Inc. Cybozu Office CVSS 3.0HIGH 7.5
- TI-2015-06995 Open redirect vulnerability in Cybozu Office 10.2.0 through 10.3.0 allows remote… CVSS 3.0HIGH 7.4
- TI-2019-04311 Path traversal in Cybozu, Inc. Cybozu Office CVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-20628 · CVE Program
- CVE-2021-20628 · NVD
- FIRST EPSS
- GHSA-6g4q-mgfw-5mhv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences