High severity · published May 30, 2023
CVE-2023-27988
The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator…
7.2
CVSS
1.4%
EPSS
No
On KEV
Description
The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NF
Nas326 Firmware · Zyxel
before 5.21\(aazf.13\)c0 · source: NVD
NF
Nas540 Firmware · Zyxel
before 5.21\(aatb.10\)c0 · source: NVD
NF
Nas542 Firmware · Zyxel
before 5.21\(abag.10\)c0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-27988
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-27988
Patch
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products
More from Nas326 Firmware
9.8
CVE-2023-27992
Zyxel Multiple NAS Devices Command Injection Vulnerability
9.8
CVE-2020-9054
ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi
9.8
CVE-2024-6342
**UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions…
9.8
CVE-2024-29974
** UNSUPPORTED WHEN ASSIGNED ** The remote code execution vulnerability in the CGI program “file_upload-cgi” in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542…
9.8
CVE-2024-29973
** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware…