---
title: "CVE-2026-76853: Netcore NR268 - Authentication Bypass"
description: "Netcore NR268 firmware version 1.7.121109 contains a security check bypass caused by flawed prefix validation in parame_put_file.cgi restore archive, letting attackers bypass restricted restore archive handling, exploit requires no special conditions."
url: https://panop.io/threat-heartbeat/CVE-2026-76853/
---

# CVE-2026-76853 Netcore NR268 - Authentication Bypass

Netcore NR268 firmware version 1.7.121109 contains a security check bypass caused by flawed prefix validation in parame\_put\_file.cgi restore archive, letting attackers bypass restricted restore archive handling, exploit requires no special conditions.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.26% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-76853)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-353](https://cwe.mitre.org/data/definitions/353.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-76853](https://nvd.nist.gov/vuln/detail/CVE-2026-76853)
- [https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr268-restore-bypass.md](https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr268-restore-bypass.md)
- [https://www.vulncheck.com/advisories/netcore-nr268-1.7.121109-security-check-bypass-in-parame-put-file-cgi](https://www.vulncheck.com/advisories/netcore-nr268-1.7.121109-security-check-bypass-in-parame-put-file-cgi)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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