Vulnerability · Published Nov 30, 2023 · Assigned by Zyxel
CVE-2023-35137
High 7.5
In plain English
A high-severity improper authentication in NAS326 firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 41.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An improper authentication vulnerability in the authentication module of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to obtain system information by sending a crafted URL to a vulnerable device.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | NAS326 firmware | V5.21(AAZF.14)C0 |
| Zyxel | NAS542 firmware | V5.21(ABAG.11)C0 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N