Cisco SD-WAN vManage Software XML External Entity Vulnerability

published 2020-07-16 6y ago modified 2026-06-17 4mo ago also EUVD-2020-24676

cvss: 6.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

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.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: last yr. (2024-11-13)

Exploit prediction

1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
NVD	2.0	4.9	AV:N/AC:M/Au:S/C:P/I:P/A:N

Affected products

Cisco Cisco SD-WAN vManage

Classification

Weakness

CWE-611 Improper Restriction of XML External Entity Reference

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanxml-Aj4GFEKd
vendor-advisory

Sources

CVE List CVE-2020-3405
NVD CVE-2020-3405

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