---
id: "CVE-2026-58498"
page: "https://infrastack.ai/live/CVE-2026-58498"
kind: "vulnerability"
aliases: ["CVE-2026-58498"]
title: "BACnet Stack: remote buffer overflow in IPv6 router application"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["bacnet-stack", "building-automation", "embedded", "ipv6", "package"]
not_affected_if: ["patched-version", "router-ipv6-not-used"]
published_at: "2026-11-13T16:19:12+00:00"
first_seen_at: "2026-11-13T16:47:35+00:00"
updated_at: "2026-11-13T16:48:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58498", "first_seen_at": "2026-11-13T16:47:35+00:00"}]
exploit_sources: []
---

# BACnet Stack: remote buffer overflow in IPv6 router application

Link for people: https://infrastack.ai/live/CVE-2026-58498 (this .md is for agents)

BACnet Stack is an open source BACnet protocol C library for embedded systems. A remote attacker can trigger an out-of-bounds write to the global transmit buffer in the router-ipv6 application shipped with it, which can corrupt memory.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the `router-ipv6` application is built or deployed from bacnet-stack
- Check the bacnet-stack version in use against the fixed versions below

## Fix

- Move to `1.4.5`, `1.5.1`, or `1.6.0` depending on your release line

## Timeline

- 2026-11-13T16:47:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-58498

## Documents

- [advisory] Vendor advisory: github.com https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-4p4w-m434-jrhj

## From the sources

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, there is a remote global-buffer-overflow in the official router-ipv6 application shipped with bacnet-stack, this results in an out-of-bounds write to the global transmit buffer under ASan. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_