Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2020-13364 CVE-2020-13365 |
CWE-ID | CWE-284 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
Zyxel NAS 326 Hardware solutions / Firmware NAS520 Hardware solutions / Routers for home users NAS540 Hardware solutions / Routers for home users NAS542 Hardware solutions / Routers for home users |
Vendor | ZyXEL Communications Corp. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU34061
Risk: Medium
CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-13364
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in a CGI script for the web application. A remote authenticated attacker can start a Telnet or SSH service and generate a password for the "NsaRescueAngel" user account with root privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsZyxel NAS 326: before V5.21(AAZF.9)C0
NAS520: before V5.21(AASZ.5)C0
NAS540: before V5.21(AATB.6)C0
NAS542: before V5.21(ABAG.6)C0
CPE2.3http://www.zyxel.com/support/Zyxel-security-advisory-for-NAS-remote-access-vulnerability.shtml
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU34062
Risk: Medium
CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-13365
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in a CGI script for the web application. A remote authenticated attacker can start a Telnet or SSH service and generate a password for the "NsaRescueAngel" user account with root privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsZyxel NAS 326: before V5.21(AAZF.9)C0
NAS520: before V5.21(AASZ.5)C0
NAS540: before V5.21(AATB.6)C0
NAS542: before V5.21(ABAG.6)C0
CPE2.3http://www.zyxel.com/support/Zyxel-security-advisory-for-NAS-remote-access-vulnerability.shtml
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.