CVE-2020-5847Actively exploitedAdded to KEV 2021-11-03

Unraid Remote Code Execution Vulnerability

Unraid, Unraid

Description

Unraid contains a vulnerability due to the insecure use of the extract PHP function that can be abused to execute remote code as root. This CVE is chainable with CVE-2020-5849 for initial access.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

Critical

95.8%

estimated chance of real-world exploitation in the next 30 days, higher than 99.9% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2022-05-03

Talk to us about this

Penetration Testing

Confirm whether this vulnerability class is actually exploitable in your environment.

Security Engineering

Get help implementing the required action and closing the gap.

Our guide to vulnerability management and patch prioritization

View on CISA's KEV catalog View on NVD

Not sure if this affects you?

We help organizations confirm real exposure and prioritize what actually needs fixing first.

Request a Security Assessment Browse Services