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TI-2026-16304 Aliases CVE-2026-20091GHSA-4pqc-pmx6-jgc9

Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability

Priority LOW 21CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious data into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid credentials for a user account with the role of Administrator or AAA Administrator. 

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00202 10th 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
Partial

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)2.14.1.131; 2.14.1.143; 2.14.1.163; 2.14.1.167; 2.16.0.128—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—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(5e); 4.2(3p)—No fix listedCNA
  • Cisco Firepower Extensible Operating System (FXOS) VendorCisco Affected 2.14.1.131; 2.14.1.143; 2.14.1.163; 2.14.1.167; 2.16.0.128 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 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(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-2026-20091
  2. 2026-10-03 Alias added: GHSA-4pqc-pmx6-jgc9

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