Vulnerability Details : CVE-2021-25831

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.
Published 2021-03-01 16:15:14
Updated 2021-03-15 19:53:12
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Execute code

Products affected by CVE-2021-25831

Exploit prediction scoring system (EPSS) score for CVE-2021-25831

EPSS FAQ
4.62%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-25831

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
 NIST
9.8
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST

References for CVE-2021-25831

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