CVE-2026-20079
CRITICALCVSS v3
10
CRITICAL
EPSS Score
11.8%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 3/4/2026
- Last Modified
- 3/5/2026
Frequently Asked Questions
What is CVE-2026-20079?
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the
Is CVE-2026-20079 actively exploited?
Active exploitation of CVE-2026-20079 has not been confirmed. The EPSS score is 11.8%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-20079?
CVE-2026-20079 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string 3.1.
Is CVE-2026-20079 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.