CVE-2016-10401
ZyXEL PK5001Z devices have zyad5001 as the su password, which makes it easier for remote...
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).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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).
- Record
CVE-2016-10401- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-255
- Updated
- 2026-11-02
CVE List No score
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).
- Record
CVE-2016-10401- Updated
- 2026-11-02
EUVDEUVD-2016-1583 No score
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).
- Record
EUVD-2016-1583- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2f5j-3w2j-7mxv
ZyXEL PK5001Z devices have zyad5001 as the su password, which makes it easier for remote...
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).
- Record
GHSA-2f5j-3w2j-7mxv- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | ZyXEL PK5001Z Modem - Backdoor Account | 2017-10-31 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-10401 is a high vulnerability (CVSS 8.8) in Zyxel Pk5001z Firmware, published July 25, 2017. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 12.3%, the 96th percentile. No source names a fixed version.