CVE-2022-4874

Authenticated bypass in Netcomm router models NF20MESH, NF20, and NL1902 allows unauthenticated user to get access to content.

HIGH
7.5
CVSS Score
Published: January 11, 2023 at 08:39 PM UTC
Updated: June 17, 2026 at 05:22 AM UTC
9 products affected across 2 vendorsNL1902 FirmwareNF20MESH FirmwareNF20 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 11%
SSVC
PoC

Description

Authentication bypass in Netcomm router models NF20MESH, NF20, and NL1902 allows an unauthenticated user to access content. In order to serve static content, the application performs a check for the existence of specific characters in the URL (.css, .png etc). If it exists, it performs a "fake login" to give the request an active session to load the file and not redirect to the login page.

Affected

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

v < r6b025
Affected range stops below r6b025, so it looks safe — our inference, not a vendor statement
netcommwireless-nf20 (same device)
v < r6b025
Affected range stops below r6b025, so it looks safe — our inference, not a vendor statement
netcommwireless-nf20mesh (same device)
v < r6b025
Affected range stops below r6b025, so it looks safe — our inference, not a vendor statement
netcommwireless-nl1902 (same device)
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

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

CVSS

7.5HIGHCISA-ADP
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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