What is the severity of CVE-2024-20510?

CVE-2024-20510 has a severity level rated as high, indicating significant risk.

How do I fix CVE-2024-20510?

To mitigate CVE-2024-20510, upgrade to the latest patched version of Cisco IOS XE Software.

What impact does CVE-2024-20510 have on my network?

CVE-2024-20510 allows unauthenticated adjacent attackers to bypass access control, potentially leading to unauthorized access to network resources.

Which Cisco IOS XE versions are affected by CVE-2024-20510?

CVE-2024-20510 affects various versions of Cisco IOS XE, including 16.3.1 to 17.13.1.

Is there a workaround for CVE-2024-20510?

Currently, there are no workarounds available for CVE-2024-20510; updating to a secure version is necessary.

Vulnerability/
CVE-2024-20510

critical

9.3

CWE

863

25/9/2024

3/10/2024

CVE-2024-20510

First published: Wed Sep 25 2024(Updated: )

A vulnerability in the Central Web Authentication (CWA) feature of Cisco IOS XE Software for Wireless Controllers could allow an unauthenticated, adjacent attacker to bypass the pre-authentication access control list (ACL), which could allow access to network resources before user authentication. This vulnerability is due to a logic error when activating the pre-authentication ACL that is received from the authentication, authorization, and accounting (AAA) server. An attacker could exploit this vulnerability by connecting to a wireless network that is configured for CWA and sending traffic through an affected device that should be denied by the configured ACL before user authentication. A successful exploit could allow the attacker to bypass configured ACL protections on the affected device before the user authentication is completed, allowing the attacker to access trusted networks that the device might be protecting.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XE Software	=16.3.1
Cisco IOS XE Software	=16.3.1a
Cisco IOS XE Software	=16.3.2
Cisco IOS XE Software	=16.3.3
Cisco IOS XE Software	=16.3.4
Cisco IOS XE Software	=16.3.5
Cisco IOS XE Software	=16.3.5b
Cisco IOS XE Software	=16.3.6
Cisco IOS XE Software	=16.3.7
Cisco IOS XE Software	=16.3.8
Cisco IOS XE Software	=16.3.9
Cisco IOS XE Software	=16.3.10
Cisco IOS XE Software	=16.3.11
Cisco IOS XE Software	=16.4.1
Cisco IOS XE Software	=16.4.2
Cisco IOS XE Software	=16.4.3
Cisco IOS XE Software	=16.5.1
Cisco IOS XE Software	=16.5.1a
Cisco IOS XE Software	=16.5.1b
Cisco IOS XE Software	=16.5.2
Cisco IOS XE Software	=16.5.3
Cisco IOS XE Software	=16.6.1
Cisco IOS XE Software	=16.6.2
Cisco IOS XE Software	=16.6.3
Cisco IOS XE Software	=16.6.4
Cisco IOS XE Software	=16.6.4a
Cisco IOS XE Software	=16.6.5
Cisco IOS XE Software	=16.6.5a
Cisco IOS XE Software	=16.6.6
Cisco IOS XE Software	=16.6.7
Cisco IOS XE Software	=16.6.8
Cisco IOS XE Software	=16.6.9
Cisco IOS XE Software	=16.6.10
Cisco IOS XE Software	=16.7.1
Cisco IOS XE Software	=16.7.1a
Cisco IOS XE Software	=16.7.1b
Cisco IOS XE Software	=16.7.2
Cisco IOS XE Software	=16.7.3
Cisco IOS XE Software	=16.7.4
Cisco IOS XE Software	=16.8.1
Cisco IOS XE Software	=16.8.1a
Cisco IOS XE Software	=16.8.1b
Cisco IOS XE Software	=16.8.1c
Cisco IOS XE Software	=16.8.1d
Cisco IOS XE Software	=16.8.1e
Cisco IOS XE Software	=16.8.1s
Cisco IOS XE Software	=16.8.2
Cisco IOS XE Software	=16.8.3
Cisco IOS XE Software	=16.9.1
Cisco IOS XE Software	=16.9.1a
Cisco IOS XE Software	=16.9.1b
Cisco IOS XE Software	=16.9.1s
Cisco IOS XE Software	=16.9.2
Cisco IOS XE Software	=16.9.3
Cisco IOS XE Software	=16.9.3a
Cisco IOS XE Software	=16.9.4
Cisco IOS XE Software	=16.9.5
Cisco IOS XE Software	=16.9.5f
Cisco IOS XE Software	=16.9.6
Cisco IOS XE Software	=16.9.7
Cisco IOS XE Software	=16.9.8
Cisco IOS XE Software	=16.10.1
Cisco IOS XE Software	=16.10.1a
Cisco IOS XE Software	=16.10.1b
Cisco IOS XE Software	=16.10.1c
Cisco IOS XE Software	=16.10.1d
Cisco IOS XE Software	=16.10.1e
Cisco IOS XE Software	=16.10.1f
Cisco IOS XE Software	=16.10.1g
Cisco IOS XE Software	=16.10.1s
Cisco IOS XE Software	=16.10.2
Cisco IOS XE Software	=16.10.3
Cisco IOS XE Software	=16.11.1
Cisco IOS XE Software	=16.11.1a
Cisco IOS XE Software	=16.11.1b
Cisco IOS XE Software	=16.11.1s
Cisco IOS XE Software	=16.11.2
Cisco IOS XE Software	=16.12.1
Cisco IOS XE Software	=16.12.1a
Cisco IOS XE Software	=16.12.1c
Cisco IOS XE Software	=16.12.1s
Cisco IOS XE Software	=16.12.1t
Cisco IOS XE Software	=16.12.1w
Cisco IOS XE Software	=16.12.1x
Cisco IOS XE Software	=16.12.1y
Cisco IOS XE Software	=16.12.1z1
Cisco IOS XE Software	=16.12.1z2
Cisco IOS XE Software	=16.12.2
Cisco IOS XE Software	=16.12.2a
Cisco IOS XE Software	=16.12.2s
Cisco IOS XE Software	=16.12.3
Cisco IOS XE Software	=16.12.3a
Cisco IOS XE Software	=16.12.3s
Cisco IOS XE Software	=16.12.4
Cisco IOS XE Software	=16.12.4a
Cisco IOS XE Software	=16.12.5
Cisco IOS XE Software	=16.12.5a
Cisco IOS XE Software	=16.12.5b
Cisco IOS XE Software	=16.12.6
Cisco IOS XE Software	=16.12.6a
Cisco IOS XE Software	=16.12.7
Cisco IOS XE Software	=16.12.8
Cisco IOS XE Software	=16.12.9
Cisco IOS XE Software	=16.12.10
Cisco IOS XE Software	=16.12.10a
Cisco IOS XE Software	=16.12.11
Cisco IOS XE Software	=17.1.1
Cisco IOS XE Software	=17.1.1a
Cisco IOS XE Software	=17.1.1s
Cisco IOS XE Software	=17.1.1t
Cisco IOS XE Software	=17.1.3
Cisco IOS XE Software	=17.2.1
Cisco IOS XE Software	=17.2.1a
Cisco IOS XE Software	=17.2.1r
Cisco IOS XE Software	=17.2.1v
Cisco IOS XE Software	=17.2.2
Cisco IOS XE Software	=17.2.3
Cisco IOS XE Software	=17.3.1
Cisco IOS XE Software	=17.3.1a
Cisco IOS XE Software	=17.3.1w
Cisco IOS XE Software	=17.3.1x
Cisco IOS XE Software	=17.3.1z
Cisco IOS XE Software	=17.3.2
Cisco IOS XE Software	=17.3.2a
Cisco IOS XE Software	=17.3.3
Cisco IOS XE Software	=17.3.4
Cisco IOS XE Software	=17.3.4a
Cisco IOS XE Software	=17.3.4b
Cisco IOS XE Software	=17.3.4c
Cisco IOS XE Software	=17.3.5
Cisco IOS XE Software	=17.3.5a
Cisco IOS XE Software	=17.3.5b
Cisco IOS XE Software	=17.3.6
Cisco IOS XE Software	=17.3.7
Cisco IOS XE Software	=17.3.8
Cisco IOS XE Software	=17.3.8a
Cisco IOS XE Software	=17.4.1
Cisco IOS XE Software	=17.4.1a
Cisco IOS XE Software	=17.4.1b
Cisco IOS XE Software	=17.4.2
Cisco IOS XE Software	=17.4.2a
Cisco IOS XE Software	=17.5.1
Cisco IOS XE Software	=17.5.1a
Cisco IOS XE Software	=17.6.1
Cisco IOS XE Software	=17.6.1a
Cisco IOS XE Software	=17.6.1w
Cisco IOS XE Software	=17.6.1x
Cisco IOS XE Software	=17.6.1y
Cisco IOS XE Software	=17.6.1z
Cisco IOS XE Software	=17.6.1z1
Cisco IOS XE Software	=17.6.2
Cisco IOS XE Software	=17.6.3
Cisco IOS XE Software	=17.6.3a
Cisco IOS XE Software	=17.6.4
Cisco IOS XE Software	=17.6.5
Cisco IOS XE Software	=17.6.5a
Cisco IOS XE Software	=17.6.6
Cisco IOS XE Software	=17.6.6a
Cisco IOS XE Software	=17.6.7
Cisco IOS XE Software	=17.7.1
Cisco IOS XE Software	=17.7.1a
Cisco IOS XE Software	=17.7.1b
Cisco IOS XE Software	=17.7.2
Cisco IOS XE Software	=17.8.1
Cisco IOS XE Software	=17.8.1a
Cisco IOS XE Software	=17.9.1
Cisco IOS XE Software	=17.9.1a
Cisco IOS XE Software	=17.9.1w
Cisco IOS XE Software	=17.9.1x
Cisco IOS XE Software	=17.9.1x1
Cisco IOS XE Software	=17.9.1y
Cisco IOS XE Software	=17.9.1y1
Cisco IOS XE Software	=17.9.2
Cisco IOS XE Software	=17.9.2a
Cisco IOS XE Software	=17.9.3
Cisco IOS XE Software	=17.9.3a
Cisco IOS XE Software	=17.9.4
Cisco IOS XE Software	=17.9.4a
Cisco IOS XE Software	=17.9.5
Cisco IOS XE Software	=17.9.5a
Cisco IOS XE Software	=17.9.5b
Cisco IOS XE Software	=17.10.1
Cisco IOS XE Software	=17.10.1a
Cisco IOS XE Software	=17.10.1b
Cisco IOS XE Software	=17.11.1
Cisco IOS XE Software	=17.11.1a
Cisco IOS XE Software	=17.11.99sw
Cisco IOS XE Software	=17.12.1
Cisco IOS XE Software	=17.12.1a
Cisco IOS XE Software	=17.12.1w
Cisco IOS XE Software	=17.12.1x
Cisco IOS XE Software	=17.12.1y
Cisco IOS XE Software	=17.12.2
Cisco IOS XE Software	=17.12.2a
Cisco IOS XE Software	=17.12.3
Cisco IOS XE Software	=17.13.1
Cisco IOS XE Software	=17.13.1a

Never miss a vulnerability like this again

Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9800-cwa-acl-nPSbHSnA

Frequently Asked Questions

What is the severity of CVE-2024-20510?
CVE-2024-20510 has a severity level rated as high, indicating significant risk.
How do I fix CVE-2024-20510?
To mitigate CVE-2024-20510, upgrade to the latest patched version of Cisco IOS XE Software.
What impact does CVE-2024-20510 have on my network?
CVE-2024-20510 allows unauthenticated adjacent attackers to bypass access control, potentially leading to unauthorized access to network resources.
Which Cisco IOS XE versions are affected by CVE-2024-20510?
CVE-2024-20510 affects various versions of Cisco IOS XE, including 16.3.1 to 17.13.1.
Is there a workaround for CVE-2024-20510?
Currently, there are no workarounds available for CVE-2024-20510; updating to a secure version is necessary.

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