← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2020-5849 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Unraid · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-5849, Unraid Authentication Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 597 days after it was published. It affects Unraid. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity7.5CVSS 3.1 · high
US federal due3 May 2022BOD 22-01 deadline

What it is

Unraid contains an authentication bypass vulnerability that allows attackers to gain access to the administrative interface. This CVE is chainable with CVE-2020-5847 for remote code execution.

VendorUnraid (2 exploited CVEs in KEV)
ProductUnraid
VulnerabilityUnraid Authentication Bypass Vulnerability
WeaknessCWE-287, CWE-697
Published16 Mar 2020
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Unraid in your asset inventory, including appliances and cloud images. Stack check lists every exploited Unraid CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 16 Mar 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Unraid.

Other exploited CVEs in Unraid

References

Questions

Is CVE-2020-5849 being exploited?

Yes. CISA added CVE-2020-5849 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-5849 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2020-5849?

Apply updates per vendor instructions. Check Unraid's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Unraid and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2021 · Unraid scorecard · act-now radar.

Running Unraid in a regulated environment?

We check exposure across your estate, patch or mitigate with your team, and set up detection for what attackers do after exploiting it.

Get in touch →