Cisco IOS XE CAPWAP Join denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Cisco IOS XE. This vulnerability affects unknown code of the component CAPWAP Join Handler. Such manipulation leads to denial of service. This vulnerability is listed as CVE-2023-20100. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco IOS XE (Router Operating System) (the affected version unknown). Affected by this issue is an unknown part of the component CAPWAP Join Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was presented 03/23/2023 as cisco-sa-c9800-apjoin-dos-nXRHkt5. The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2023-20100 since 10/27/2022. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-24279). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2022 🔍
03/23/2023 +147 days 🔍
03/23/2023 +0 days 🔍
08/22/2025 +883 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-c9800-apjoin-dos-nXRHkt5
Status: Confirmed

CVE: CVE-2023-20100 (🔍)
GCVE (CVE): GCVE-0-2023-20100
GCVE (VulDB): GCVE-100-223688
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 03/23/2023 17:59
Updated: 08/22/2025 20:20
Changes: 03/23/2023 17:59 (39), 04/13/2023 11:20 (1), 08/22/2025 20:20 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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