Improper Privilege Management Vulnerability in Zyxel ATP and USG FLEX Series Firmware
CVE-2023-5650

5.5MEDIUM

Key Information:

Vendor
Zyxel
Status
ATP series firmware
USG FLEX series firmware
USG FLEX 50(W) series firmware
USG20(W)-VPN series firmware
Vendor
CVE Published:
28 November 2023

Summary

An improper privilege management flaw in the ZySH component of several Zyxel firewall firmware versions could enable an authenticated local attacker to tamper with the registration page URL in the web GUI of affected devices. This vulnerability compromises the integrity of the device settings, potentially leading to further attacks or unauthorized access.

Affected Version(s)

USG20(W)-VPN series firmware versions 4.16 through 5.37

ATP series firmware versions 4.32 through 5.37

USG FLEX 50(W) series firmware versions 4.16 through 5.37

References

https://www.zyxel.com/global/en/support/security-advisori...
vendor-advisory

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.