What’s Vulnerable › Vulnerabilities

CVE-2021-41560

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 11.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-15 · updated 2026-06-17
• Weakness: CWE-434

Description

OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.

Affected products

• OpenCATS: through 0.9.6

References

• https://github.com/Nickguitar/RevCAT
• https://github.com/opencats/OpenCATS/commit/b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1
• https://youtu.be/isiDISag7CM
• https://github.com/Nickguitar/RevCAT
• https://github.com/opencats/OpenCATS/commit/b1af3bde1f68bec1c703ad66a3e390f15ed8ebe1
• https://youtu.be/isiDISag7CM

Get alerted when CVE-2021-41560 or the next vulnerability affects your stack