NVD

CVE-2024-20322 Detail

Description

A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 5.8 MEDIUM

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-acl-bypass-RZU5NL3e	CVE, Cisco Systems, Inc.	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-284	Improper Access Control	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

4 change records found show changes

Initial Analysis by NIST 8/05/2025 10:41:53 AM

Action

Type

Old Value

New Value

Added

CPE Configuration

Record truncated, showing 2048 of 4355 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:ios_xr:7.11:*:*:*:*:*:*:*
     OR
          cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-a:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-d:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540x-acc-sys:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8101-32fh:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8102-64h:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8201:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8201-32fh:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8608:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8804:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8808:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8812:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:8818:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-24q2c2dd-sys:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-24q8l2dd-sys:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-6z14s-sys-d:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-6z18g-sys-a:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-6z18g-sys-d:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_540-fh-agg:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ncs_5504:-:*:*:*:*:*:*:*
          cpe:2.3:h:c

Added

Reference Type

CVE: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-acl-bypass-RZU5NL3e Types: Vendor Advisory

Added

Reference Type

Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-acl-bypass-RZU5NL3e Types: Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2024-20322
NVD Published Date:
03/13/2024
NVD Last Modified:
08/05/2025
Source:
Cisco Systems, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2024-20322 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

Initial Analysis by NIST 8/05/2025 10:41:53 AM

CVE Modified by CVE 11/21/2024 3:52:22 AM

CVE Modified by Cisco Systems, Inc. 5/14/2024 10:50:57 AM

New CVE Received from Cisco Systems, Inc. 3/13/2024 1:15:48 PM

Quick Info