← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2020-9054 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · Zyxel Multiple Network-Attached Storage (NAS) Devices · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-9054, Zyxel Multiple NAS Devices OS Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 751 days after it was published. It affects Zyxel Multiple Network-Attached Storage (NAS) Devices, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 25 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due15 Apr 2022BOD 22-01 deadline

What it is

Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code.

VendorZyxel (13 exploited CVEs in KEV)
ProductMultiple Network-Attached Storage (NAS) Devices
VulnerabilityZyxel Multiple NAS Devices OS Command Injection Vulnerability
WeaknessCWE-78
Published4 Mar 2020
Added to KEV25 Mar 2022
Reported by (CNA)certcc

What to do

  1. Check whether you run it. Look for Multiple Network-Attached Storage (NAS) Devices in your asset inventory, including appliances and cloud images. Stack check lists every exploited Zyxel 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 4 Mar 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Zyxel.

Other exploited CVEs in Multiple Network-Attached Storage (NAS) Devices

References

Questions

Is CVE-2020-9054 being exploited?

Yes. CISA added CVE-2020-9054 to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-9054 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-2020-9054?

Apply updates per vendor instructions. Check Zyxel's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Multiple Network-Attached Storage (NAS) Devices 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 March 2022 · Zyxel scorecard · act-now radar.

Running Zyxel 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 →