CVE-2021-25830
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductOnlyoffice Document Server
PublishedMar 1, 2021
First seenMar 1, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| onlyoffice document_server | 4.2.0.236 ≤ v ≤ 5.6.4.13 | — |
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