CVE-2026-76852

Netcore NR268 1.7.121109 Forgeable Firmware Authenticity Check in mtd_write

State: Published
Severity: 8.7 High
Published: Sep 15, 2026
Updated: Sep 17, 2026
Reserved: Aug 19, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-354 Improper Validation of Integrity Check Value

Affected Products

Product	Versions
NR268Netcore	1.7.121109Affected

References

Netcore router public references: Forgeable Firmware Authenticity Check in mtd_writethird-party-advisory
VulnCheck Advisory: Netcore NR268 1.7.121109 Forgeable Firmware Authenticity Check in mtd_writethird-party-advisory

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