Is CVE-2016-10401 in the CISA KEV catalog?

No. CVE-2016-10401 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-10401?

CVE-2016-10401 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2016-10401?

CVE-2016-10401 has an EPSS score of 12.34% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2016-10401

HIGHEPSS 96th pctl

8.8

CVSS v3

NVD

Description

ZyXEL PK5001Z devices have zyad5001 as the su password, which makes it easier for remote attackers to obtain root access if a non-root account password is known (or a non-root default account exists within an ISP's deployment of these devices).

CWE-255

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

12.34%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.