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CVE-2026-20126

Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability

HIGH

7.8

CVSS Score

Published: February 25, 2026 at 04:13 PM UTC

Updated: June 17, 2026 at 10:17 AM UTC

1 product affected across 1 vendorCatalyst Sd WAN Manager

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system. This vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system. A successful exploit could allow the attacker to gain root privileges on the underlying operating system.

Affected

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

Catalyst Sd WAN Manager · Cisco

95%

v < 20.9.8.220.11 ≤ v < 20.12.5.320.13 ≤ v < 20.15.4.220.16 ≤ v < 20.18.2.117.2.10 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 18.4.518.4.501_ES18.4.6 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 20.10.1.220.10.1_LI_Images20.11.1 20.11.1.1 20.11.1.220.11.1_LI_Images20.12.120.12.1_LI_Images20.12.220.12.2_LI_Images20.12.3 20.12.3.120.12.3_LI_Images20.12.4 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_Images20.12.4_Monthly_ES520.12.5 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 20.12.501 20.12.5_LI_Images 20.12.6 20.12.6_LI_Images 20.13.120.13.1_LI_Images20.14.120.14.1_LI_Images20.15.1 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_LI_Images 20.16.1 20.16.1_LI_Images 20.18.1 20.18.1_LI_Images 20.18.2 20.18.2_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 20.9.1.120.9.1EFT220.9.1_LI_Images20.9.2 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_Images20.9.3_LI_ Images20.9.4 20.9.4.0.4 20.9.4.1 20.9.4.1.1 20.9.4.1.3 20.9.4.1.620.9.4.1_LI_Images20.9.4_LI_Images20.9.5 20.9.5.1 20.9.5.1.420.9.5.1_LI_Images20.9.5.2 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 20.9.5.2.720.9.5.2_LI_Images20.9.5.3 20.9.5.3_LI_Images20.9.5_LI_Images20.9.6 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_LI_Images

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-authbp-qwCX8D4v

References (1)

Vendor Advisory

Source: cverecord

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.8HIGH[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-648

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