What is CVE-2026-35019?

CVE-2026-35019 is a high-severity vulnerability in Netcomm Wireless Pty Ltd Nf20mesh, classified under Use of Hard-coded Cryptographic Key. CVSS score: 8.1/10. Published 2026-06-23.

How severe is CVE-2026-35019?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Netcomm Wireless Pty Ltd Nf20mesh

CVE-2026-35019

NetComm NF20MESH routers running firmware R6B031 and earlier contain an authentication bypass vulnerability that allows unauthenticated attackers to gain administrative access by exploiting a hardcoded AES-256 key used to encrypt session cookies for the web management interface. Attackers can forge a valid encrypted session cookie using the shared hardcoded key and bypass authentication checks to obtain full administrative control of the management interface while any legitimate administrator session is active.

EPSS: 0.008 (54.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Netcomm Wireless Pty Ltd Nf20mesh — versions 0

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

References

disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (release-notes, patch)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-35019?: CVE-2026-35019 is a high-severity vulnerability in Netcomm Wireless Pty Ltd Nf20mesh, classified under Use of Hard-coded Cryptographic Key. CVSS score: 8.1/10. Published 2026-06-23.
How severe is CVE-2026-35019?: High severity. CVSS v3 base score is 8.1 out of 10.