CVE-2026-20127

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Source

https://cve.org/CVERecord?id=CVE-2026-20127

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-20127.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-20127

Published

2026-02-25T17:25:29.477Z

Modified

2026-03-13T04:03:00.100876Z

Severity

10.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.

This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.

References

Affected packages

Git /

Affected ranges

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-20127.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "20.9.8.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "20.11"
            },
            {
                "fixed": "20.12.5.3"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "20.13"
            },
            {
                "fixed": "20.15.4.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "20.16"
            },
            {
                "fixed": "20.18.2.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "20.12.6"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "20.9.8.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "20.11"
            },
            {
                "fixed": "20.12.5.3"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "20.13"
            },
            {
                "fixed": "20.15.4.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "20.16"
            },
            {
                "fixed": "20.18.2.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "20.12.6"
            }
        ]
    }
]