Netcore NR268 1.7.121109 Forgeable Firmware Authenticity Check in mtd_write (CVE-2026-76852) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-76852

Netcore NR268 1.7.121109 Forgeable Firmware Authenticity Check in mtd_write

Answer in brief

CVE-2026-76852 records a Unknown severity vulnerability in Netcore NR268 1.7.121109 Forgeable Firmware Authenticity Check in mtd_write. The current sources do not mark it as known exploited. The current feed maps Netcore/NR268 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 15, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Netcore/NR268 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Netcore/NR268generic	1.7.121109	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Netcore/NR268.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.