# CVE-2026-92255 — Netcore NR255-V

> As of 2026-09-15, CVE-2026-92255 is a MEDIUM-severity vulnerability in Netcore NR255-V, CVSS v3.1 5.4, EPSS 0.2% (19.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-92255 as of 2026-09-15; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-15

## What is CVE-2026-92255?

Netcore NR255-V version 1.5.130703 contains an out-of-bounds read vulnerability in filter_arp_put_file.cgi caused by improper use of a string handling API. Attackers can trigger an unterminated buffer over-read by exploiting this flaw in the affected component, potentially exposing adjacent memory contents.

The record classifies CVE-2026-92255 under weakness class [CWE-125](https://intel.threadlinqs.com/cwe/CWE-125). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 20 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.4 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L`)
- **CVSS v4.0 base score:** 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 19.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-15

## Is CVE-2026-92255 being exploited?

It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Netcore](https://intel.threadlinqs.com/vendors/netcore): NR255-V

## How to fix CVE-2026-92255

No vendor patch reference has been recorded for CVE-2026-92255 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-92255

No threat campaign in the Threadlinqs corpus currently references CVE-2026-92255, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-09-16. This product uses the NVD API but is not endorsed or certified by the NVD.

**Third-party advisory**

- [github.com — third party advisory](https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-arp-import-overread.md)
- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-out-of-bounds-read-in-filter-arp-put-file-cgi-via-string-api-misuse)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-92255
Full detection coverage and IOCs for threats exploiting CVE-2026-92255 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp