CVE-2023-20226 Denial of service in Cisco IOS XE Software

High 8.6 Published 27 Sep 2023 Updated 2 Aug 2024

Unauthenticated remote attackers can cause Cisco IOS XE devices to reload unexpectedly via crafted packets, resulting in a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-20226?

CVE-2023-20226 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 27 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in Application Quality of Experience (AppQoE) and Unified Threat Defense (UTD) on Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to the mishandling of a crafted packet stream through the AppQoE or UTD application. An attacker could exploit this vulnerability by sending a crafted packet stream through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Weakness: CWE-456

Which versions are affected by CVE-2023-20226?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2023-20226?

No fix has been published for CVE-2023-20226 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-20226 being exploited?

There is no known exploitation of CVE-2023-20226 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-pp22-wchm-v8fh.