CVE-2021-20807
Description
Cross-site scripting vulnerability in the management screen of Cybozu Remote Service 3.0.0 to 3.1.9 allows a remote attacker to inject an arbitrary script via unspecified vectors.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Cross-site scripting in Cybozu Remote Service management screen allows remote attackers to inject arbitrary scripts via unspecified vectors.
Vulnerability
Cross-site scripting (XSS) vulnerability exists in the management screen of Cybozu Remote Service versions 3.0.0 through 3.1.9 [1][2]. The vulnerability allows an attacker to inject arbitrary scripts via unspecified vectors [1].
Exploitation
An attacker can exploit this vulnerability by tricking a user with access to the management screen into interacting with a crafted link or content. The attack requires user interaction and high complexity [2]. No authentication is needed, but the attacker must be on the network [2].
Impact
Successful exploitation allows the attacker to execute arbitrary scripts in the context of the user's browser, potentially leading to information disclosure (low confidentiality) and data manipulation (low integrity) within the scope of the affected component [2]. The impact is limited to the user's session.
Mitigation
The vulnerability is fixed in Cybozu Remote Service version 4.0.0, released on 2021-09-29 [2]. Users should upgrade to the latest version. No workarounds are mentioned in the available references.
AI Insight generated on May 27, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: >=3.0.0, <=3.1.9
- Cybozu, Inc./Cybozu Remote Servicev5Range: 3.0.0 to 3.1.9
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- jvn.jp/en/jp/JVN52694228/index.htmlmitrex_refsource_MISC
- kb.cybozu.support/article/37430mitrex_refsource_MISC
News mentions
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