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CVE Vulnerability Details :
CVE-2023-33010
PUBLISHED
More InfoOfficial Page
Assigner-Zyxel
Assigner Org ID-96e50032-ad0d-4058-a115-4d2c13821f9f
View Known Exploited Vulnerability (KEV) details
Published At-24 May, 2023 | 00:00
Updated At-21 Oct, 2025 | 23:05
Rejected At-
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
Zyxel Networks CorporationZyxel
Product
ATP series firmware
Versions
Affected
  • 4.32 through 5.36 Patch 1
Vendor
Zyxel Networks CorporationZyxel
Product
USG FLEX series firmware
Versions
Affected
  • 4.50 through 5.36 Patch 1
Vendor
Zyxel Networks CorporationZyxel
Product
USG FLEX 50(W) firmware
Versions
Affected
  • 4.25 through 5.36 Patch 1
Vendor
Zyxel Networks CorporationZyxel
Product
USG20(W)-VPN firmware
Versions
Affected
  • 4.25 through 5.36 Patch 1
Vendor
Zyxel Networks CorporationZyxel
Product
VPN series firmware
Versions
Affected
  • 4.30 through 5.36 Patch 1
Vendor
Zyxel Networks CorporationZyxel
Product
ZyWALL/USG series firmware
Versions
Affected
  • 4.25 through 4.73 Patch 1
Problem Types
TypeCWE IDDescription
CWECWE-120CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Type: CWE
CWE ID: CWE-120
Description: CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls
N/A
Hyperlink: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls
x_transferred
Hyperlink: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls
Resource:
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
kev
dateAdded:
2023-06-05
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
CVE-2023-33010 added to CISA KEV2023-06-05 00:00:00
Event: CVE-2023-33010 added to CISA KEV
Date: 2023-06-05 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010
government-resource
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33010
Resource:
government-resource
Details not found