CVE-2026-20099
A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is due to insufficient input validation of command arguments supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of the affected device with root-level privileges.
EPSS 0.06% · 18.0th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.12.2, 9.12.1, 9.12.3 |
| Cisco | Cisco Firepower Extensible Operating System (FXOS) | 2.3.1.99, 2.3.1.56, 2.3.1.58 |
| Cisco | Cisco Unified Computing System (Managed) | 4.0(4h), 4.1(1a), 4.0(1c) |
Exploit Intelligence
- cisco-sa-ucsciv-wGYtC78q (circl)
Timeline
- Oct 8, 2025 CVE ID Reserved
- Feb 25, 2026 CVE Published
- Feb 26, 2026 EPSS Score
- Feb 26, 2026 CVE Updated
- Feb 27, 2026 EPSS Score
- Mar 1, 2026 EPSS Score
- Mar 2, 2026 EPSS Score
- Mar 4, 2026 EPSS Score
- Mar 5, 2026 EPSS Score
- Mar 7, 2026 EPSS Score
- Mar 8, 2026 EPSS Score
- Mar 10, 2026 EPSS Score