Riskcovery

CVE-2026-20129

Cisco Catayst SD-WAN Authentication Bypass Vulnerability

State
Published
Severity
9.8 Critical
Published
Feb 25, 2026
Updated
Mar 20, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

Description

A vulnerability in the API user authentication of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain access to an affected system as a user who has the netadmin role.

The vulnerability is due to improper authentication for requests that are sent to the API. An attacker could exploit this vulnerability by sending a crafted request to the API of an affected system. A successful exploit could allow the attacker to execute commands with the privileges of the netadmin role. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability. 

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hcisco

Weaknesses

Affected Products

ProductVersions
Cisco Catalyst SD-WAN ManagerCisco
  • 20.1.12Affected
  • 19.2.1Affected
  • 18.4.4Affected
  • 18.4.5Affected
  • 20.1.1.1Affected
  • 20.1.1Affected
  • 19.3.0Affected
  • 19.2.2Affected
  • 19.2.099Affected
  • 18.3.6Affected
  • 18.3.7Affected
  • 19.2.0Affected
  • 18.3.8Affected
  • 19.0.0Affected
  • 19.1.0Affected
  • 18.4.302Affected
  • 18.4.303Affected
  • 19.2.097Affected
  • 19.2.098Affected
  • 17.2.10Affected
  • 18.3.6.1Affected
  • 19.0.1aAffected
  • 18.2.0Affected
  • 18.4.3Affected
  • 18.4.1Affected
  • and 310 more versions

References

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