Is CVE-2020-5847 actively exploited?

Yes. CVE-2020-5847 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2020-5847 be exploited remotely?

The attack vector of CVE-2020-5847 has not been classified yet.

What is the CVSS score of CVE-2020-5847?

CVE-2020-5847 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2020-5847

HIGHCISA KEVIN THE WILD

CVE-2020-5847

Published: November 3, 2021

EPSS:93.51%probability of exploitation in 30 daysPercentile:99.8th

Official 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.

NVD Source

CISA KEV Advisory

Unraid Remote Code Execution Vulnerability

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.

Added to KEV: 2021-11-03Federal patch deadline: 2022-05-03

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

Unraid contains a vulnerability due to the insecure use of a PHP function, which can lead to remote code execution as root. With an EPSS score of 0.93510 and its presence in CISA's KEV, this vulnerability is highly likely to be exploited and represents a critical security risk. It can also be chained with CVE-2020-5849 for initial access.

This vulnerability is actively being exploited in the wild. Its chainability with another CVE for initial access suggests a sophisticated exploitation path.

Recommended Action

It is crucial to apply the latest security updates for Unraid to remediate this vulnerability. Additionally, review PHP configurations to ensure secure function usage and minimize potential attack surfaces.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2020-5847 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2020-5847 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.