CVE-2026-20099
Cisco UCS Manager and FXOS Software Command Injection Vulnerability
CVSS Score
6.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | cisco |
| Product | cisco firepower extensible operating system (fxos) |
| Ecosystems | |
| Industries | NetworkingTelecommunications |
| Published | Feb 25, 2026 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Cisco / Cisco Firepower Extensible Operating System (FXOS)
2.3.1.99 2.3.1.56 2.3.1.110 2.3.1.58 2.6.1.174 2.6.1.157 2.3.1.91 2.3.1.73 2.3.1.66 2.6.1.166 2.3.1.111 2.3.1.166 2.3.1.144 2.6.1.131 2.3.1.130 2.3.1.88 2.6.1.169 2.3.1.75 2.3.1.93 2.3.1.145 2.3.1.155 2.6.1.187 2.3.1.173 2.3.1.179 2.6.1.192 2.3.1.180 2.6.1.204 2.6.1.214 2.3.1.190 2.6.1.224 2.6.1.229 2.3.1.215 2.10.1.159 2.3.1.216 2.6.1.230 2.10.1.166 2.6.1.238 2.6.1.239 2.11.1.154 2.10.1.179 2.3.1.219 2.6.1.254 2.12.0.31 2.12.0.432 2.10.1.207 2.3.1.230 2.6.1.259 2.11.1.182 2.12.0.450 2.10.1.234 2.13.0.198 2.12.0.467 2.13.0.212 2.6.1.264 2.10.1.245 2.11.1.200 2.12.0.498 2.10.1.271 2.12.1.29 2.13.0.243 2.11.1.205 2.6.1.265 2.12.1.48 2.14.1.131 2.13.0.276 2.11.1.228 2.12.1.72 2.10.1.312 2.6.1.272 2.14.1.143 2.14.1.163 2.14.1.167 2.12.1.84 2.16.0.128 2.10.1.328 2.10.1.341 2.11.1.236 2.12.1.95 2.13.0.357 2.16.0.136 2.14.1.186 2.17.0.518 2.14.1.187
Cisco / Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
9.12.2 9.12.1 9.12.3 9.12.4 9.12.3.2 9.12.3.12 9.12.2.5 9.12.1.2 9.12.2.1 9.12.3.7 9.12.2.9 9.12.3.9 9.12.1.3 9.12.4.2 9.12.4.4 9.12.4.7 9.12.4.8 9.12.4.10 9.12.4.13 9.12.4.18 9.12.4.24 9.16.1 9.12.4.26 9.16.1.28 9.12.4.29 9.16.2 9.12.4.30 9.16.2.3 9.12.4.35 9.16.2.7 9.12.4.37 9.17.1 9.16.2.11 9.16.2.13 9.12.4.39 9.12.4.38 9.16.2.14 9.17.1.7 9.12.4.40 9.16.3.3 9.16.3 9.17.1.9 9.16.3.14 9.12.4.41 9.17.1.10 9.18.1 9.12.4.47 9.16.3.15 9.18.1.3 9.17.1.11 9.12.4.48 9.18.2 9.16.3.19 9.17.1.13 9.12.4.50 9.17.1.15 9.12.4.52 9.16.3.23 9.18.2.5 9.16.4 9.12.4.54 9.17.1.20 9.18.2.7 9.19.1 9.16.4.9 9.12.4.55 9.18.2.8 9.16.4.14 9.18.3 9.19.1.5 9.12.4.56 9.17.1.30 9.19.1.9 9.18.3.39 9.16.4.19 9.12.4.58 9.19.1.12 9.18.3.46 9.16.4.27 9.19.1.18 9.18.3.53 9.18.3.55 9.16.4.38 9.17.1.33 9.12.4.62 9.16.4.39 9.18.3.56 9.16.4.42 9.19.1.22 9.18.4 9.18.4.5 9.19.1.24 9.16.4.48 9.18.4.8 9.20.2 9.19.1.27 9.12.4.65 9.16.4.55 9.18.4.22 9.20.2.10 9.16.4.57 9.19.1.28 9.17.1.39 9.12.4.67 9.18.4.24 9.20.2.21 9.16.4.61 9.19.1.31 9.18.4.29 9.20.2.22 9.16.4.62 9.18.4.34 9.20.3 9.16.4.67 9.18.4.40 9.16.4.71 9.20.3.4 9.18.4.47 9.20.3.7 9.17.1.45 9.19.1.37 9.16.4.76 9.18.4.50 9.20.3.10 9.18.4.52 9.20.3.13 9.18.4.53 9.16.4.82 9.20.3.16 9.19.1.42 9.18.4.57 9.16.4.84 9.20.3.20 9.20.4 9.20.4.7
Cisco / Cisco Unified Computing System (Managed)
4.0(4h) 4.1(1a) 4.0(1c) 4.0(4a) 4.0(1a) 4.0(1d) 4.1(1c) 4.0(2a) 4.0(4g) 4.0(2e) 4.0(4c) 4.0(4f) 4.0(1b) 4.0(2b) 4.0(2d) 4.1(1b) 4.0(4d) 4.0(4e) 4.0(4b) 4.1(2a) 4.1(1d) 4.0(4i) 4.1(1e) 4.1(2b) 4.0(4k) 4.1(3a) 4.1(3b) 4.1(2c) 4.0(4l) 4.1(4a) 4.1(3c) 4.1(3d) 4.2(1c) 4.2(1d) 4.0(4m) 4.1(3e) 4.2(1f) 4.1(3f) 4.2(1i) 4.1(3h) 4.2(1k) 4.2(1l) 4.0(4n) 4.2(1m) 4.1(3i) 4.2(2a) 4.2(1n) 4.1(3j) 4.2(2c) 4.2(2d) 4.2(3b) 4.1(3k) 4.0(4o) 4.2(2e) 4.2(3d) 4.2(3e) 4.2(3g) 4.1(3l) 4.3(2b) 4.2(3h) 4.2(3i) 4.3(2c) 4.1(3m) 4.3(2e) 4.3(3a) 4.2(3j) 4.3(3c) 4.3(4a) 4.2(3k) 4.3(4b) 4.3(4c) 4.2(3l) 4.3(4d) 4.3(2f) 4.2(3m) 4.3(5a) 4.3(4e) 4.1(3n) 4.3(4f) 4.2(3n) 4.3(5c) 4.2(3o) 4.3(5d) 4.3(6a) 4.3(6b) 4.3(5e) 4.2(3p)