vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-22923

MEDIUM
6.5
CVSS Score
Published: May 1, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:36 AM UTC
2 products affected across 1 vendorNbg 418N FirmwareNbg 418N

Using NBG-418N v2 firmware by Zyxel?

Get instant alerts when new vulnerabilities affect NBG-418N v2 firmware - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

A format string vulnerability in a binary of the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote authenticated attacker to cause denial-of-service (DoS) conditions on an affected device.

Affected

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

Nbg 418N Firmware· Zyxel
95%
v ≤ 1.00(aarp.13)c0
zyxel-nbg-418n (same device)
Nbg 418N· Zyxel
60%
< V1.00(AARP.14)C0

Remediation

No guide yet

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

Patch and advisory references

References (1)

PatchVendor Advisory
Source: [email protected]
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nbg-418n-v2-home-router

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMZyxel
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-134

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card