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Exploited vulnerability · CISA KEV

Is CVE-2017-5521 exploited? Yes: in CISA KEV since 8 Sep 2022

Gociux · NETGEAR Multiple Devices · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2017-5521, NETGEAR Multiple Devices Exposure of Sensitive Information Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 8 Sep 2022, 2060 days after it was published. It affects NETGEAR Multiple Devices. If you run it, CISA's required action is: Apply updates per vendor instructions. If the affected device has since entered end-of-life, it should be disconnected if still in use.

exploitedYesCISA KEV · 8 Sep 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.1CVSS 3.1 · high
US federal due29 Sep 2022BOD 22-01 deadline

What it is

Multiple NETGEAR devices are prone to admin password disclosure via simple crafted requests to the web management server.

VendorNETGEAR (8 exploited CVEs in KEV)
ProductMultiple Devices
VulnerabilityNETGEAR Multiple Devices Exposure of Sensitive Information Vulnerability
WeaknessCWE-200
Published17 Jan 2017
Added to KEV8 Sep 2022
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Multiple Devices in your asset inventory, including appliances and cloud images. Stack check lists every exploited NETGEAR CVE at once.
  2. Apply the fix. Apply updates per vendor instructions. If the affected device has since entered end-of-life, it should be disconnected if still in use.
  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 17 Jan 2017.
  4. Get told next time. Email alerts when CISA adds a CVE for NETGEAR.

Other exploited CVEs in Multiple Devices

References

Questions

Is CVE-2017-5521 being exploited?

Yes. CISA added CVE-2017-5521 to the Known Exploited Vulnerabilities catalog on 8 Sep 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2017-5521 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-2017-5521?

Apply updates per vendor instructions. If the affected device has since entered end-of-life, it should be disconnected if still in use. Check NETGEAR's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Multiple 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 September 2022 · NETGEAR scorecard · act-now radar.

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