CVE-2023-35137

HIGH
7.5
CVSS Score
Published: November 30, 2023 at 01:25 AM UTC
Updated: June 17, 2026 at 06:04 AM UTC
4 products affected across 1 vendorNAS326 firmwareNAS542 firmwareNas326

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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%

Description

An improper authentication vulnerability in the authentication module of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to obtain system information by sending a crafted URL to a vulnerable device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 5.21(aazf.14)c05.21(AAZF.14)C0
zyxel-nas326 (same device)
v ≤ 5.21(abag.11)c05.21(ABAG.11)C0
zyxel-nas542 (same device)
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.5HIGHZyxel
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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