CVE-2021-43447 - Vulnerability Details - OpenCVE

Description

ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. An authentication bypass in the document editor allows attackers to edit documents without authentication.

Published: 2023-01-23

Score: 7.5 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:onlyoffice:server:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-30380	ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. An authentication bypass in the document editor allows attackers to edit documents without authentication.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00195.

Exploitation poc

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/ONLYOFFICE/server
https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution/
https://www.onlyoffice.com/

History

Wed, 02 Apr 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Onlyoffice Server

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-01-23T00:00:00.000Z

Updated: 2025-04-02T16:02:06.611Z

Reserved: 2021-11-08T00:00:00.000Z

Link: CVE-2021-43447

Vulnrichment

Updated: 2024-08-04T03:55:29.295Z

NVD

Status : Modified

Published: 2023-01-23T15:15:13.397

Modified: 2025-04-02T16:15:19.257

Link: CVE-2021-43447

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-306

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