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CVE-2016-10401

46
FAUCET Score

CVE-2016-10401 describes a critical vulnerability in ZyXEL PK5001Z devices, where a hardcoded "zyad5001" password for the 'su' command allows remote attackers to gain root access if a non-root account password is known or a default non-root account exists. This vulnerability carries a high CVSS score of 8.8, indicating a network-based attack with low complexity, requiring only low privileges, and leading to complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog, exploit code is publicly available via ExploitDB (EDB-43105), and it has garnered significant community discussion and media coverage, including its association with Mirai and "Hide 'N Seek" IoT botnet activity.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:zyxel:pk5001z_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
12.11%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-43105 · Oct 31, 2017
This CVE's current EPSS score of 0.1211 is in the 95th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

forum.openwrt.org / viewtopic.php
ExploitThird Party Advisory
exploit-db.com / exploits/43105