CVE-2021-25094
8.1 · HIGHOverview
CVE-2021-25094 is a high-severity vulnerability affecting brandexponents tatsu. It was published on April 25, 2022 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.
Remediation
Check the references section for vendor advisories and patches from brandexponents. Update tatsu to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| brandexponents | tatsu | >= 0, < 3.3.12 | Affected |
References
Frequently Asked Questions
What is CVE-2021-25094?
CVE-2021-25094 is a high-severity vulnerability affecting brandexponents tatsu. It was published on April 25, 2022 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-25094?
This vulnerability has a CVSS 3.1 base score of 8.1, 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-2021-25094?
Check the references section for vendor advisories and patches from brandexponents. Update tatsu to the latest patched version. 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-2021-25094?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-25094 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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