CVE-2026-76853

EUVD-2026-80056 HIGH

Missing Support for Integrity Check (CWE-353)

2026-09-15 disclosure@vulncheck.com

GHSA-6mhv-w69c-76fg

Authentication Bypass

7.2

CVSS 4.0 · Vendor: vulncheck

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Vulnerability Assessment

Weakness

CWE

CWE-353

OWASP Top 10:2025

A08:2025 - Software or Data Integrity Failures

ASVS 5.0

V15 - Secure Coding and Architecture Integrity check implementation

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

An authenticated attacker can bypass the restore-archive prefix validation in the parame_put_file.cgi handler of Netcore NR268 firmware 1.7.121109, allowing a crafted configuration-restore archive to write files outside the intended restore path. The flaw yields a high integrity and availability impact — device configuration can be overwritten or unset, and the router can be left in an unusable state — while confidentiality is unaffected per the CVSS 4.0 vector (VC:N/VI:H/VA:H). No public exploit code or CISA KEV entry has been identified at time of analysis, and no vendor-released patch is referenced in the available advisories.

Affected VersionsENISA

NR268 1.7.121109

Affected Packages

euvd nr268 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vulncheck) PRIMARY 7.2 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck) · only source for this CVE.

CVSS VectorVendor: vulncheck

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Vulnerable system: Confidentiality

None

Vulnerable system: Integrity

High

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

DescriptionCVE.org

Netcore NR268 firmware version 1.7.121109 contains a security check bypass vulnerability in the parame_put_file.cgi restore archive prefix validation. Attackers can exploit the flawed prefix check in put_parame_file_cgi.c to bypass restricted restore archive handling.

Threat Intelligence Overview

EPSS Score

0.2%

Top 88% exploitable

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.2%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.