CVE-2021-1589: Cisco SD-WAN vManage Software Disaster Recovery Feature Password Exposure Vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-23 · updated 2026-06-17
Weakness: CWE-256

Description

A vulnerability in the disaster recovery feature of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to gain unauthorized access to user credentials. This vulnerability exists because access to API endpoints is not properly restricted. An attacker could exploit this vulnerability by sending a request to an API endpoint. A successful exploit could allow the attacker to gain unauthorized access to administrative credentials that could be used in further attacks.

Affected products

Cisco Sd-Wan: from 20.3 before 20.3.4; from 20.4 before 20.4.2; from 20.5 before 20.5.2; from 20.6 before 20.6.1 — fixed in 20.3.4, 20.4.2, 20.5.2, 20.6.1

How to fix

Upgrade to a fixed version: Cisco Sd-Wan 20.3.4, 20.4.2, 20.5.2, 20.6.1. Check the vendor advisory for mitigations.

References

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