CVE-2021-25830

Critical · 9.8

CVSS

9.8

EPSS

11.8%

Published

Mar 1, 2021

CISA due date

—

The record

A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.2.0.236-v5.6.4.13. An attacker must request the conversion of the crafted file from DOCT into DOCX format. Using the chain of two other bugs related to improper string handling, an attacker can achieve remote code execution on DocumentServer.

Affected packages

Ecosystem	Package	Introduced	Fixed