Is CVE-2023-33010 actively exploited?

Yes. CVE-2023-33010 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-33010 be exploited remotely?

The attack vector of CVE-2023-33010 has not been classified yet.

What is the CVSS score of CVE-2023-33010?

CVE-2023-33010 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-33010

HIGHCISA KEVIN THE WILD

CVE-2023-33010

Published: June 5, 2023

EPSS:5.85%probability of exploitation in 30 daysPercentile:90.4th

Official Description

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.

NVD Source

CISA KEV Advisory

Zyxel Multiple Firewalls Buffer Overflow Vulnerability

Added to KEV: 2023-06-05Federal patch deadline: 2023-06-26

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This vulnerability affects Zyxel firewalls, allowing an unauthenticated attacker to cause denial-of-service or execute code remotely due to a buffer overflow in the ID processing function. The high EPSS score of 0.05853 indicates a significant likelihood of exploitation, and its inclusion in CISA's KEV confirms it has been actively exploited.

Active exploitation of this vulnerability has been observed in the wild. The nature of the flaw suggests it is remotely exploitable without authentication.

Recommended Action

Administrators should apply the latest security updates and patches for their Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls to address this critical vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-33010 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2023-33010 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.