CVE-2023-33010

Known Exploited

Description

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 7.20% Top 10%
KEV Since 
Vendor Advisory zyxel.com
Affected: Zyxel ATP series firmware
Affected: Zyxel USG FLEX series firmware
Affected: Zyxel USG FLEX 50(W) firmware
Affected: Zyxel USG20(W)-VPN firmware
Affected: Zyxel VPN series firmware
Affected: Zyxel ZyWALL/USG series firmware
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2023-33010?
CVE-2023-33010 has been scored as a critical severity vulnerability.
How to fix CVE-2023-33010?
To fix CVE-2023-33010, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-33010 being actively exploited in the wild?
It is confirmed that CVE-2023-33010 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-33010?
CVE-2023-33010 affects Zyxel ATP series firmware, Zyxel USG FLEX series firmware, Zyxel USG FLEX 50(W) firmware, Zyxel USG20(W)-VPN firmware, Zyxel VPN series firmware, Zyxel ZyWALL/USG series firmware.
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