What is GHSA-6645-rfg8-rhrm?

GHSA-6645-rfg8-rhrm is a security advisory published by GitHub Security Advisories with High severity. Netcore NR268 firmware version 1.7.121109 has an improper integrity verification flaw in...

Which CVE IDs does GHSA-6645-rfg8-rhrm cover?

GHSA-6645-rfg8-rhrm covers the following CVE IDs: CVE-2026-76852. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-6645-rfg8-rhrm?

GHSA-6645-rfg8-rhrm has a CVSS v3 base score of 8.8, published by GitHub Security Advisories.

GHSA-6645-rfg8-rhrmHighCVSS 8.8

Netcore NR268 firmware version 1.7.121109 has an improper integrity verification flaw in...

Vendor

GitHub Security Advisories

Published

September 16, 2026

Last Modified

September 16, 2026

🔗 CVE IDs covered (1)

CVE-2026-76852 →

📋 Description

Netcore NR268 firmware version 1.7.121109 has an improper integrity verification flaw in mtd_write allowing forged firmware authenticity checks. Attackers can exploit put_file.cgi and check_image_uuid.c to bypass firmware signature validation and load unauthorized firmware images.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-76852
https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr268-firmware-forgery.md
https://www.vulncheck.com/advisories/netcore-nr268-1.7.121109-forgeable-firmware-authenticity-check-in-mtd-write
https://github.com/advisories/GHSA-6645-rfg8-rhrm