CVE-2026-76852 Netcore NR268 - Authentication Bypass

Netcore NR268 firmware version 1.7.121109 contains an authentication bypass caused by improper integrity verification in mtd_write, letting attackers bypass firmware signature validation and load unauthorized firmware images, exploit requires access to put_file.cgi and check_image_uuid.c.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.27% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-354

Vendor fix

Update to the latest firmware version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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