CVE-2023-22916
moderate-risk
Published 2023-04-24
The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through 5.35, USG20(W)-VPN firmware versions 5.10 through 5.35, and VPN series firmware versions 5.00 through 5.35, which fails to properly sanitize user input. A remote unauthenticated attacker could leverage the vulnerability to modify device configuration data, resulting in DoS conditions on an affected device if the attacker could trick an authorized administrator to switch the management mode to the cloud mode.
Do I need to act?
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0.71% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.1/10
High
NETWORK
/ LOW complexity
Affected Products (18)
Usg 20W-Vpn Firmware
Affected Vendors
References (2)
49
/ 100
moderate-risk
Severity
28/34 · Critical
Exploitability
2/34 · Minimal
Exposure
19/34 · Moderate