CVE-2023-5372
CVE-2023-5372 is a high-severity vulnerability in Zyxel Nas326 Firmware with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- EPSS exploit prediction: 28% (98th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-57688
- Weakness: CWE-78
- Affected product: Zyxel Nas326 Firmware
- Published:
- Last modified:
Description
The post-authentication command injection vulnerability in Zyxel NAS326 firmware versions through V5.21(AAZF.15)C0 and NAS542 firmware versions through V5.21(ABAG.12)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands by sending a crafted query parameter attached to the URL of an affected device’s web management interface.
Frequently asked questions
- What is CVE-2023-5372?
- The post-authentication command injection vulnerability in Zyxel NAS326 firmware versions through V5.21(AAZF.15)C0 and NAS542 firmware versions through V5.21(ABAG.12)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands by sending a crafted query parameter attached to the URL of an affected device’s web management interface.
- How severe is CVE-2023-5372?
- CVE-2023-5372 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-5372 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-5372?
- CVE-2023-5372 primarily affects Zyxel Nas326 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-5372?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2023-5372 have an EU (EUVD) identifier?
- Yes. CVE-2023-5372 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57688.
- When was CVE-2023-5372 published?
- CVE-2023-5372 was published on 2024-01-30 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nas542_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Zyxel Nas326 Firmware
- CVE-2024-6342 — Critical (CVSS 9.8): **UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware…
- CVE-2024-29974 — Critical (CVSS 9.8): ** UNSUPPORTED WHEN ASSIGNED ** The remote code execution vulnerability in the CGI program “file_upload-cgi” in…
- CVE-2024-29973 — Critical (CVSS 9.8): ** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326…
- CVE-2024-29972 — Critical (CVSS 9.8): ** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the CGI program "remote_help-cgi" in Zyxel…
- CVE-2023-4474 — Critical (CVSS 9.8): The improper neutralization of special elements in the WSGI server of the Zyxel NAS326 firmware version…
- CVE-2023-4473 — Critical (CVSS 9.8): A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542…
All CVEs affecting Zyxel Nas326 Firmware →
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