NAS540 Firmware
5 CVEs tracked. 2 of them are in CISA KEV.
This hub aggregates every CVE we track for NAS540 Firmware, a product in the networking infrastructure space. Use it to gauge the current risk picture and drill into individual advisories.
NAS540 Firmware CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 0 |
| 2024-12 | 0 |
| 2025-01 | 0 |
| 2025-02 | 0 |
| 2025-03 | 0 |
| 2025-04 | 0 |
| 2025-05 | 0 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 0 |
| 2025-09 | 0 |
| 2025-10 | 0 |
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 0 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 0 |
Severity
How the 5 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical2
- High3
Latest CVEs
The 5 most recently published vulnerabilities affecting NAS540 Firmware.
- CVE-2023-27992The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware ve...9.8
- CVE-2023-27988The 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 execut...7.2
- CVE-2020-13365Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. This affec...8.8
- CVE-2020-13364A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21(AASZ.4)C0, V5.21(AASZ.0)C0, V5.11(AASZ.3)C0, and V5.11(AASZ.0)C0; NAS542 V5.11(ABAG.0)C0...8.8
- CVE-2020-9054ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi9.8
Product grouping is registry-driven, with AI assist and human review. How it works