TI-2020-02956 Aliases CVE-2020-3406 GHSA-43p9-75r2-vgfm

Cisco SD-WAN vManage Software Cross-Site Scripting Vulnerability

LOW 26CWE-79Published 2020-07-16 · Updated 2024-11-13

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 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

A vulnerability in the web-based management interface of the Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00819 57th percentileScored 2026-11-08

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco SD-WAN vManage	all versions	—	No fix listed	CNA

Cisco SD-WAN vManage VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:sd-wan_firmware::::::::	up to 19.2.2	Vulnerable	Cisco

cpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:* Versions up to 19.2.2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-3406
2026-10-03 Alias added: GHSA-43p9-75r2-vgfm

References

Advisory 1

20200715 Cisco SD-WAN vManage Software Cross-Site Scripting Vulnerability

TI-2019-12050 Cisco SD-WAN Solution vManage SQL Injection Vulnerability CVSS 3.1HIGH 8.1
TI-2020-02938 Cisco SD-WAN vManage Software Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
TI-2021-01028 Cisco SD-WAN Buffer Overflow Vulnerabilities CVSS 3.1CRITICAL 9.8
TI-2021-01027 Cisco SD-WAN Buffer Overflow Vulnerabilities CVSS 3.1CRITICAL 9.8
TI-2021-01005 Cisco SD-WAN Denial of Service Vulnerabilities CVSS 3.1HIGH 8.6
TI-2021-01001 Cisco SD-WAN Denial of Service Vulnerabilities CVSS 3.1HIGH 8.6

See all 40 →

Sources

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