CVE-2021-25094
Tatsu < 3.3.12 - Unauthenticated RCE
- Published
- Apr 25, 2022
- Updated
- Apr 21, 2025
- Assigning CNA
- WPScan
- Evidence observed
- Apr 18, 2025
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.7%
- Model date
- Oct 19, 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
modules/exploits/multi/http/wp_tatsu_rce.rb
Metasploit Framework modulesDeclared conditions
- platform: PHP($.exploit_multi/http/wp_tatsu_rce.platform)
- verification: check_declared($.exploit_multi/http/wp_tatsu_rce.check)
http/cves/2021/CVE-2021-25094.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: word($.matchers[*].type)
Responsible use
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