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TI-2026-16321 Aliases CVE-2026-20108GHSA-4wfv-hq2x-7m5r

Cross-site scripting in Cisco Catalyst SD-WAN Manager

Priority LOW 24CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 Catalyst SD-WAN Manager could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of the web-based management interface to click a crafted link. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00168 6th 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 Catalyst SD-WAN Manager20.12.1; 20.12.1_LI_Images; 20.12.2; 20.12.3; 20.12.3.1; 20.12.4; 20.12.4.1; 20.12.5; 20.12.5.1; 20.12.5.2; 20.12.6; 20.12.6.1; 20.12.5.3; 20.13.1; 20.14.1; 20.15.1; 20.15.2; 20.15.3; 20.15.3.1; 20.15.4; 20.15.4.1; 20.15.4.2; 20.16.1; 20.18.1—No fix listedCNA
  • Cisco Catalyst SD-WAN Manager VendorCisco Affected 20.12.1; 20.12.1_LI_Images; 20.12.2; 20.12.3; 20.12.3.1; 20.12.4; 20.12.4.1; 20.12.5; 20.12.5.1; 20.12.5.2; 20.12.6; 20.12.6.1; 20.12.5.3; 20.13.1; 20.14.1; 20.15.1; 20.15.2; 20.15.3; 20.15.3.1; 20.15.4; 20.15.4.1; 20.15.4.2; 20.16.1; 20.18.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*20.12 to before 20.12.5.3; 20.13 to before 20.15.4.2; 20.16 to before 20.18.2.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:*20.12.6VulnerableCisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* Versions 20.12 to before 20.12.5.3; 20.13 to before 20.15.4.2; 20.16 to before 20.18.2.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:* Versions 20.12.6 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20108
  2. 2026-10-03 Alias added: GHSA-4wfv-hq2x-7m5r

References

Advisory 1

  • TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16340 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16436 Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2022-05334 Cisco SD-WAN Software Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2026-16341 Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability KEVCVSS 3.1HIGH 7.5
See all 91 →

Sources

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