Read the docs
TI-2026-16312 Aliases CVE-2026-20099GHSA-687g-rcf9-r6r3

Cisco UCS Manager and FXOS Software Command Injection Vulnerability

Priority LOW 33CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00743 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco 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—No fix listedCNA
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.12.2; 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—No fix listedCNA
CiscoCisco 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)—No fix listedCNA
  • Cisco Firepower Extensible Operating System (FXOS) VendorCisco Affected 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 Fixed in — No fix listed CNA
  • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software VendorCisco Affected 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 Fixed in — No fix listed CNA
  • Cisco Unified Computing System (Managed) VendorCisco Affected 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) Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20099
  2. 2026-10-03 Alias added: GHSA-687g-rcf9-r6r3
  3. 2026-10-04 EPSS moved to the 50th–90th percentile

References

Other 1

  • TI-2026-74174 Arbitrary file write in Cisco Secure Email Gateway via AMP feature KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-53489 Cisco Secure Email Gateway SQL Injection Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-53488 Cisco Identity Services Engine Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16344 Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
See all 7059 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences