A vulnerability in the management interface access control list (ACL) processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not been supported on Cisco IOS XR Software Packet I/O infrastructure platforms for Linux-handled features such as SSH, NetConf, or gRPC. An attacker could exploit this vulnerability by attempting to send traffic to an affected device. A successful exploit could allow the attacker to bypass an ingress ACL that is applied on the management interface of the affected device.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Cisco
  • Ios Xr Software

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References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-acl-packetio-Swjhhbtz cve-icon cve-icon
History

Thu, 11 Sep 2025 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco ios Xr Software
Vendors & Products Cisco
Cisco ios Xr Software

Wed, 10 Sep 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 10 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Description A vulnerability in the management interface access control list (ACL) processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not been supported on Cisco IOS XR Software Packet I/O infrastructure platforms for Linux-handled features such as SSH, NetConf, or gRPC. An attacker could exploit this vulnerability by attempting to send traffic to an affected device. A successful exploit could allow the attacker to bypass an ingress ACL that is applied on the management interface of the affected device.
Title Cisco IOS XR Software Management Interface ACL Bypass Vulnerability
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2025-09-10T16:06:49.862Z

Updated: 2025-09-10T18:20:28.931Z

Reserved: 2024-10-10T19:15:13.217Z

Link: CVE-2025-20159

cve-icon Vulnrichment

Updated: 2025-09-10T18:20:18.573Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-10T16:15:35.880

Modified: 2025-09-11T17:14:10.147

Link: CVE-2025-20159

cve-icon Redhat

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