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Fencer Vulns
medium 4.5

CVE-2018-21159 json

NETGEAR ReadyNAS devices before 6.9.3 are affected by incorrect configuration of security settings.

published 2020-04-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13677

cvss
4.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

NETGEAR ReadyNAS devices before 6.9.3 are affected by incorrect configuration of security settings.

Patch / fix

  • netgear readynas_os 6.9.3

Exploit prediction

1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 4.5 CVSS:3.0/AC:L/AV:A/A:N/C:N/I:H/PR:H/S:U/UI:N
NVD 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CNA 3.0 4.5 CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.