VULNERABILITY INTELLIGENCE

CVE-2021-25833

CVSS score9.8 CRITICAL
EPSS probability43.53%
CISA KEVNot currently listed
Published2021-03-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

A file extension handling issue was found in [server] module of ONLYOFFICE DocumentServer v4.2.0.71-v5.6.0.21. The file extension is controlled by an attacker through the request data and leads to arbitrary file overwriting. Using this vulnerability, a remote attacker can obtain remote code execution on DocumentServer.

Weakness classification

  • nvd@nist.gov: CWE-22

Primary references