CVE-2026-76853

A security flaw has been discovered in Netcore NR268 1.7.121109. Affected by this issue is some unknown functionality of the component CGI Endpoint. Performing a manipulation results in cross-site request forgery. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was identified in Netcore NR268 1.7.121109 in the eval function of /router/l7_call_board_user_set.cgi in the Web UI component. Manipulation of the title/note/URL/content arguments leads to cross-site scripting (XSS). The attack can be launched remotely and the exploit is publicly available.

A vulnerability has been found in Netcore NR268 1.7.121109. This affects the function filter_arp_put_file_cgi of the file /router/filter_arp_put_file.cgi. The manipulation of the argument put_file leads to out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was determined in Netcore NR268 1.7.121109 in the 'user_ok' function of the CGI Execution component. Manipulation causes improper authentication, and the attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized; the vendor did not respond.

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.