CVE-2026-20224

Cisco Catalyst SD-WAN Manager XML External Entity Injection Vulnerability

HIGH

8.6

CVSS Score

Published: May 14, 2026 at 04:08 PM UTC

Updated: October 26, 2026 at 02:10 PM UTC

1 product affected across 1 vendorCatalyst Sd WAN Manager

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Severity

HIGH8.6

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauthenticated, remote attacker to read arbitrary files that are stored in an affected system. The attacker does not need to have valid user credentials. This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing an XML file. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to read arbitrary files that are stored in the affected system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Catalyst Sd WAN Manager · Cisco

95%

v < 20.9.9.120.10 ≤ v < 20.12.5.420.12.6 ≤ v < 20.12.6.220.13 ≤ v < 20.15.4.420.15.5 ≤ v < 20.15.5.220.16 ≤ v < 20.18.2.226.1 ≤ v < 26.1.1.117.2.10 17.2.4 17.2.5 17.2.6 17.2.7 17.2.8 17.2.9 18.2.0 18.3.0 18.3.1 18.3.1.1 18.3.3 18.3.3.1 18.3.4 18.3.5 18.3.6 18.3.6.1 18.3.7 18.3.8 18.4.0 18.4.0.1 18.4.1 18.4.3 18.4.302 18.4.303 18.4.4 18.4.5 18.4.501_ES 18.4.6 19.0.0 19.0.1a 19.1.0 19.2.0 19.2.097 19.2.098 19.2.099 19.2.1 19.2.2 19.2.3 19.2.31 19.2.32 19.2.4 19.2.4.0.1 19.2.4.0.8 19.2.4.0.9 19.2.929 19.3.0 20.1.1 20.1.1.1 20.1.12 20.1.2 20.1.2_937 20.1.3 20.1.3.1 20.10.1 20.10.1.1 20.10.1.2 20.10.1_LI_Images 20.11.1 20.11.1.1 20.11.1.2 20.11.1_LI_Images 20.12.1 20.12.1_LI_Images 20.12.2 20.12.2_LI_Images 20.12.3 20.12.3.1 20.12.3_LI_Images 20.12.4 20.12.4.0.03 20.12.4.0.4 20.12.4.0.6 20.12.4.1 20.12.4.1_LI_Images 20.12.401 20.12.4_LI_Images 20.12.4_Monthly_ES5 20.12.5 20.12.5.1 20.12.5.1.01 20.12.5.1_LI_Images 20.12.5.2 20.12.5.2_LI_Images 20.12.5.3 20.12.5.3_LI_Images 20.12.5.4 20.12.5.4_LI_ Images 20.12.501 20.12.5_LI_Images 20.12.6 20.12.6.1 20.12.6.1_LI_Images 20.12.6.2_LI_Images 20.12.6_LI_Images 20.12.7 20.12.7.1 20.12.7.1_LI_Images 20.12.7_LI_Images 20.13.1 20.13.1_LI_Images 20.14.1 20.14.1_LI_Images 20.15.1 20.15.1_LI_Images 20.15.2 20.15.2_LI_Images 20.15.3 20.15.3.1 20.15.3_ LI _Images 20.15.4 20.15.4.1 20.15.4.1_LI_Images 20.15.4.2 20.15.4.2_LI_Images 20.15.4_LI_Images 20.15.5 20.15.5_LI_Images 20.16.1 20.16.1_LI_Images 20.18.1 20.18.1_LI_Images 20.18.2 20.18.2.1 20.18.2.1_LI_Images 20.18.2.2 20.18.2.2_LI_Images 20.18.2_LI_Images 20.18.3 20.18.3_LI_Images 20.3.1 20.3.2 20.3.2.0.5 20.3.2.0.6 20.3.2.1 20.3.2.1_927 20.3.2.1_930 20.3.2_925 20.3.2_928 20.3.2_929 20.3.2_937 20.3.3 20.3.3.0.14 20.3.3.0.16 20.3.3.0.17 20.3.3.0.18 20.3.3.0.2 20.3.3.0.4 20.3.3.0.8 20.3.3.1 20.3.3.1.1 20.3.3.1.10 20.3.3.1.2 20.3.3.1.5 20.3.3.1.7 20.3.3.2 20.3.4 20.3.4.0.1 20.3.4.0.11 20.3.4.0.19 20.3.4.0.20 20.3.4.0.24 20.3.4.0.25 20.3.4.0.26 20.3.4.0.5 20.3.4.0.6 20.3.4.0.9 20.3.4.1 20.3.4.1.1 20.3.4.1.2 20.3.4.2 20.3.4.2.1 20.3.4.2.2 20.3.4.3 20.3.5 20.3.5.0.7 20.3.5.0.8 20.3.5.0.9 20.3.5.1 20.3.6 20.3.7 20.3.7.1 20.3.7.2 20.3.8 20.3.813 20.3.814 20.4.1 20.4.1.0.01 20.4.1.0.02 20.4.1.0.1 20.4.1.1 20.4.1.1.5 20.4.1.2 20.4.2 20.4.2.0.1 20.4.2.0.2 20.4.2.0.4 20.4.2.1 20.4.2.1.1 20.4.2.2 20.4.2.2.1 20.4.2.2.2 20.4.2.2.3 20.4.2.2.4 20.4.2.2.8 20.4.2.3 20.5.0.1.1 20.5.1 20.5.1.0.1 20.5.1.0.2 20.5.1.1 20.5.1.2 20.6.0.18.3 20.6.0.18.4 20.6.1 20.6.1.0.1 20.6.1.1 20.6.1.2 20.6.2 20.6.2.0.4 20.6.2.1 20.6.2.2 20.6.2.2.2 20.6.2.2.3 20.6.2.2.4 20.6.2.2.7 20.6.3 20.6.3.0.10 20.6.3.0.11 20.6.3.0.14 20.6.3.0.18 20.6.3.0.19 20.6.3.0.2 20.6.3.0.23 20.6.3.0.25 20.6.3.0.27 20.6.3.0.29 20.6.3.0.31 20.6.3.0.32 20.6.3.0.33 20.6.3.0.38 20.6.3.0.39 20.6.3.0.40 20.6.3.0.41 20.6.3.0.45 20.6.3.0.46 20.6.3.0.47 20.6.3.0.5 20.6.3.0.51 20.6.3.0.7 20.6.3.1 20.6.3.1.1 20.6.3.2 20.6.3.3 20.6.3.4 20.6.4 20.6.4.0.19 20.6.4.0.21 20.6.4.0.4 20.6.4.1 20.6.4.2 20.6.5 20.6.5.1 20.6.5.1.10 20.6.5.1.11 20.6.5.1.13 20.6.5.1.14 20.6.5.1.2 20.6.5.1.3 20.6.5.1.4 20.6.5.1.5 20.6.5.1.6 20.6.5.1.7 20.6.5.1.9 20.6.5.2 20.6.5.2.1 20.6.5.2.3 20.6.5.2.4 20.6.5.2.8 20.6.5.3 20.6.5.4 20.6.5.5 20.6.6 20.6.6.0.1 20.6.7 20.6.8 20.7.1 20.7.1.0.2 20.7.1.1 20.7.1EFT2 20.7.2 20.8.1 20.9.1 20.9.1.1 20.9.1EFT2 20.9.1_LI_Images 20.9.2 20.9.2.0.01 20.9.2.1 20.9.2.2 20.9.2.3 20.9.2_LI_Images 20.9.3 20.9.3.0.12 20.9.3.0.16 20.9.3.0.17 20.9.3.0.18 20.9.3.0.2 20.9.3.0.20 20.9.3.0.21 20.9.3.0.23 20.9.3.0.24 20.9.3.0.25 20.9.3.0.26 20.9.3.0.29 20.9.3.0.3 20.9.3.0.4 20.9.3.0.5 20.9.3.0.7 20.9.3.0.8 20.9.3.1 20.9.3.2 20.9.3.2_LI_Images 20.9.3_LI_ Images 20.9.4 20.9.4.0.4 20.9.4.1 20.9.4.1.1 20.9.4.1.3 20.9.4.1.6 20.9.4.1_LI_Images 20.9.4_LI_Images 20.9.5 20.9.5.1 20.9.5.1.4 20.9.5.1_LI_Images 20.9.5.2 20.9.5.2.1 20.9.5.2.13 20.9.5.2.14 20.9.5.2.16 20.9.5.2.21 20.9.5.2.7 20.9.5.2_LI_Images 20.9.5.3 20.9.5.3_LI_Images 20.9.5_LI_Images 20.9.6 20.9.6.0.3 20.9.6_LI_Images 20.9.7 20.9.7.1 20.9.7.1_LI _Images 20.9.7_LI _Images 20.9.8 20.9.8.2 20.9.8.2_LI_Images 20.9.8_LI_Images 20.9.9 20.9.9_LI_Images 26.0.1 26.1.1 26.1.1_LI_Images

Affected range stops below 20.12.5.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.12.6.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.15.4.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.15.5.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.18.2.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.9.9.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 26.1.1.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-mltvnps2-JxpWm7R

References (2)

Vendor Advisory

Source: cverecord

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-mltvnps2-JxpWm7R

Not Applicable

Source: cverecord

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHcisco

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-20

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