What is CVE-2023-33013?

CVE-2023-33013 is a high-severity vulnerability in Zyxel Nbg6604, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-08-14.

How severe is CVE-2023-33013?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2023-33013 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Zyxel Nbg6604

CVE-2023-33013

A post-authentication command injection vulnerability in the NTP feature of Zyxel NBG6604 firmware version V1.01(ABIR.1)C0 could allow an authenticated attacker to execute some OS commands remotely by sending a crafted HTTP request.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.014 (70.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zyxel Nbg6604
Zyxel Nbg6604 Firmware — versions V1.01(ABIR.1)C0
Zyxel Nbg6604_firmware — versions 1.01\(abir.1\)c0

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

winmt/winmt

References

security@zyxel.com.tw (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-33013?: CVE-2023-33013 is a high-severity vulnerability in Zyxel Nbg6604, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-08-14.
How severe is CVE-2023-33013?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-33013 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.