Improper Authentication Vulnerability in Zyxel NAS Firmware
CVE-2023-35137

7.5HIGH

Key Information:

Vendor

Zyxel
Status
NAS326 firmware
NAS542 firmware
Vendor
CVE Published:
30 November 2023

What is CVE-2023-35137?

An improper authentication vulnerability exists in Zyxel NAS326 and NAS542 devices, specifically within their authentication modules. An unauthenticated attacker could exploit this flaw by sending a specially crafted URL to a vulnerable device, potentially allowing access to sensitive system information. This vulnerability highlights the importance of robust authentication mechanisms in safeguarding device integrity.

Affected Version(s)

NAS326 firmware V5.21(AAZF.14)C0

NAS542 firmware V5.21(ABAG.11)C0

References

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

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.