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I. Basic Information for CVE-2021-25831
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. An attacker must request the conversion of the crafted file from PPTT into PPTX format. Using the chain of two other bugs related to improper string handling, a remote attacker can obtain remote code execution on DocumentServer.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Ascensio System ONLYOFFICE Document Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ascensio System ONLYOFFICE Document Server是拉脱维亚Ascensio System公司的一套在线办公协作套件。该产品支持文本、电子表格和演示文稿的查看和编辑等。 Ascensio System ONLYOFFICE Document Server v4.0.0-9-v5.6.3 存在安全漏洞,该漏洞[core]模块中发现一个文件扩展名处理问题。远程攻击者可利用该漏洞可以获得DocumentServer上的远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-n/a n/a -
II. Public POCs for CVE-2021-25831
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III. Intelligence Information for CVE-2021-25831
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IV. Related Vulnerabilities
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