Read the docs
TI-2020-02955 Aliases CVE-2020-3405GHSA-v7ff-8293-rf9q

Cisco SD-WAN vManage Software XML External Entity Vulnerability

Priority LOW 35CWE-611Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the web UI of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to gain read and write access to information that is stored on an affected system. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by persuading a user to import a crafted XML file with malicious entries. A successful exploit could allow the attacker to read and write files within the affected application.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01281 70th 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

VendorProductAffected versionsFixed inStatusSource
CiscoCisco SD-WAN vManageall versions—No fix listedCNA
  • Cisco SD-WAN vManage VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:cisco:sd-wan_firmware:*:*:*:*:*:*:*:*up to 19.2.2VulnerableCisco
  • 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

  1. 2026-10-02 Threatist record created from CVE-2020-3405
  2. 2026-10-03 Alias added: GHSA-v7ff-8293-rf9q

References

Advisory 1

  • 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