CVE-2021-44527 Denial of service in UniFi Switches
A network-accessible attacker can cause a Denial of Service on UniFi Switches, requiring a firmware upgrade to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-44527?
CVE-2021-44527 is a medium-severity denial of service vulnerability in UniFi Switches, published on 7 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability found in UniFi Switch firmware Version 5.43.35 and earlier allows a malicious actor who has already gained access to the network to perform a Deny of Service (DoS) attack on the affected switch.This vulnerability is fixed in UniFi Switch firmware 5.76.6 and later.
Weakness: CWE-400
Which versions are affected by CVE-2021-44527?
It affects 1 product.
Products include Ui Unifi Switch Firmware.
How do I fix CVE-2021-44527?
No fix has been published for CVE-2021-44527 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-2021-44527 being exploited?
There is no known exploitation of CVE-2021-44527 in the wild and no public exploit code.
Other vulnerabilities in UniFi Switches
Sources
Also known as GHSA-2fpq-jhjc-vqfv.