Home/CVE/Cross-site scripting vulnerability in E-mail of Cybozu Office 10.0.0 to 10.8.4 allows remote attackers to inject an arbi
CVE

CVE-2021-20629

Cross-site scripting vulnerability in E-mail of Cybozu Office 10.0.0 to 10.8.4 allows remote attackers to inject an arbi

Cross-site scripting vulnerability in E-mail of Cybozu Office 10.0.0 to 10.8.4 allows remote attackers to inject an arbitrary script via unspecified vectors.

MEDIUM · CVSS 6.1 EPSS 0.00347
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

1
cybozu office>= 10.0.0 and <= 10.8.4
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighCode Executed Via Office Add-in XLL File
producthighPotential Persistence Via Microsoft Office Add-In
producthighPotential Persistence Via Microsoft Office Startup Folder
producthighFile With Uncommon Extension Created By An Office Application
producthighOffice Macro File Creation From Suspicious Process
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · vultures@jpcert.or.jp
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Mar 2021 · 01:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://jvn.jp/en/jp/JVN45797538/index.htmlThird Party Advisory
https://kb.cybozu.support/article/36867/Vendor Advisory
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