Vulnerability · Published Sep 6, 2022 · Assigned by Zyxel
CVE-2022-34747
Critical 9.8
In plain English
A critical-severity security flaw in Zyxel 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 1.8% (higher than 78% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.8%top 21.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A format string vulnerability in Zyxel NAS326 firmware versions prior to V5.21(AAZF.12)C0 could allow an attacker to achieve unauthorized remote code execution via a crafted UDP packet.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | Zyxel NAS326 firmware | < V5.21(AAZF.12)C0 |
Weakness: CWE-134 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H