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Vulnerability record · CVE-2022-4873 · published 11 January 2023

CVE-2022-4873: Netcommwireless nf20 firmware out-of-bounds write vulnerability

Netcommwireless · Nf20 Firmware

On Netcomm router models NF20MESH, NF20, and NL1902 a stack based buffer overflow affects the sessionKey parameter. By providing a specific number of bytes, the instruction pointer is able to be overwritten on the stack and crashes the application at a known location.

9.8 CVSS 3.1 Critical EPSS 7.2% · top 5.9% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score
7.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

On Netcomm router models NF20MESH, NF20, and NL1902 a stack based buffer overflow affects the sessionKey parameter. By providing a specific number of bytes, the instruction pointer is able to be overwritten on the stack and crashes the application at a known location.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md ExploitThird Party Advisory
https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md ExploitThird Party Advisory
https://www.kb.cert.org/vuls/id/986018

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-4873), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.