Vulnerability · Published Apr 27, 2023 · Assigned by Zyxel
CVE-2023-28769
Critical 9.8
In plain English
A critical-severity buffer overflow in DX5401-B0 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 5.4% (higher than 93% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)5.4%top 7.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Metasploit
Official description
The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | DX5401-B0 firmware | < V5.17(ABYO.1)C0 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H