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CVE-2021-43444

7.5 · HIGH

ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control.

Published Jan 23, 2023CWE-287EPSS 1.20%

Overview

CVE-2021-43444 is a high-severity vulnerability. It was published on January 23, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. Signed document download URLs can be forged due to a weak default URL signing key.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/ONLYOFFICE/serverReflabs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution/Refwww.onlyoffice.com/GitHubgithub.com/ONLYOFFICE/serverReflabs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution/Refwww.onlyoffice.com/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-43444?

CVE-2021-43444 is a high-severity vulnerability. It was published on January 23, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-43444?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-43444?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-43444?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-43444 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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