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CVE-2021-25094

HighPublished

Tatsu < 3.3.12 - Unauthenticated RCE

Published: Apr 25, 2022
Updated: Apr 21, 2025
Assigning CNA: WPScan
Evidence observed: Apr 18, 2025

Primary CVSS

8.1/ 10High

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CVE-2021-25094

HighPublished

Tatsu < 3.3.12 - Unauthenticated RCE

Published: Apr 25, 2022
Updated: Apr 21, 2025
Assigning CNA: WPScan
Evidence observed: Apr 18, 2025

Primary CVSS

8.1/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

83.4%

High · next 30 days

Percentile: 99.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2021-25094-tatsu-preauth-rceExploit
Proof-of-concept exploit for unauthenticated remote code execution in Tatsu Builder WordPress plugin (CVE-2021-25094). Supports multiple shell techniques, proxy, and compression levels.
TypeHub-ExploiterExploit
This script exploits a vulnerability (CVE-2021-25094) in the TypeHub WordPress plugin.
typehub-exploiterExploit
GILANG - Exploiter for CVE-2021-25094
CVE-2021-25094Exploit
Tatsu Plugin ZIP File add_custom_font unrestricted upload
Tatsu 3.3.11 - Unauthenticated RCEExploit
Milad karimi · php · Apr 18, 2025

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