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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Netcomm | NF20 | R6B025 |
| Netcomm | NF20MESH | R6B025 |
| Netcomm | NL1902 | R6B025 |
References
- https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.mdExploit, Third Party Advisory
- https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.mdExploit, Third Party Advisory
- https://www.kb.cert.org/vuls/id/986018
Timeline
- Published
- Jan 11, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified