Home / Vulnerabilities / CVE-2023-33010
CRITICAL SEVERITY
CVE-2023-33010 Zyxel · Multiple Firewalls

Zyxel Multiple Firewalls Buffer Overflow Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL
9.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

5.85 %
Predictive Probability
Percentile Rank
90.3 th

Documented as more likely to be exploited than 90.3% of known CVEs.

Detection Date

Jun 05, 2023

Remediation Due

Jun 26, 2023

CISA Catalog Active

Threat Analysis

Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2023-33010