---
id: CVE-2026-101354
title: A security flaw has been discovered in FAST FAC1203R 20200116_2.0.4
summary: >-
  A security flaw has been discovered in FAST FAC1203R 20200116_2.0.4. The
  affected element is the function _tWlanTask of the component MmtAtePrase
  Parser. Performing a manipulation results in stack-based buffer overflow. The
  attacker must…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
vendor: FAST
product: FAC1203R
affected:
  - FAC1203R 20200116_2.0.4
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T02:16:53.230'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101354'
references:
  - url: >-
      https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-twlantask-MmtAtePrase-stack-overflow(1)/vul-find-FAST_FAC1203R-twlantask-MmtAtePrase-stack-overflow
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-101354'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/927238'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/411088'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/411088/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T01:24:51.146Z'
---

## Overview

A security flaw has been discovered in FAST FAC1203R 20200116_2.0.4. The affected element is the function _tWlanTask of the component MmtAtePrase Parser. Performing a manipulation results in stack-based buffer overflow. The attacker must have access to the local network to execute the attack. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.