CVE-2026-96257

Description

A flaw has been found in Fast FAC1203R Gigabit Edition 2.0.4. Affected by this issue is the function copy_msg_element of the component Device Discovery Service. Executing a manipulation can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Overview

State: PUBLISHED
Assigner (CNA): VulDB
CVSS severity: CRITICAL
CVSS score: 10.0 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Effective score: 10.0 / 10 CRITICAL source: CNA overview
CWE(s): CWE-121, CWE-119
Reserved: 2026-09-22
Published: 2026-09-23 03:00 UTC
Last updated: 2026-09-23 14:07 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/96xxx/CVE-2026-96257.json
Linked Threat: CVE-2026-96257 — Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-23 03:17:06 UTC
NVD last modified: 2026-09-23 15:17:31 UTC
NVD CVSS v3.1: 10.0 / 10 CRITICAL source: cna@vuldb.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitability subscore: 3.9 / 10
Impact subscore: 6.0 / 10
EPSS score: 0.0104 (probability of exploitation in next 30 days)
EPSS percentile: 62.48% vs all CVEs — higher = more likely to be exploited, as of 2026-09-23

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-85014
Assigner: VulDB
Published: Sep 23, 2026, 3:00:10 AM
Updated: Sep 23, 2026, 2:07:16 PM
EUVD base score (CVSS 4.0): 10.0 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
EUVD-reported EPSS: 1.0400
Vendors: Fast
Products: FAC1203R Gigabit Edition (2.0.4)
Aliases: GHSA-fgvq-2jw8-748x

ENISA description: A flaw has been found in Fast FAC1203R Gigabit Edition 2.0.4. Affected by this issue is the function copy_msg_element of the component Device Discovery Service. Executing a manipulation can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

EUVD references (5)

Affected products (1)

Vendor	Product	Versions	Platforms
Fast	FAC1203R Gigabit Edition	`2.0.4` (affected)	—

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

VDB-408707 | Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow vdb-entrytechnical-description
VDB-408707 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
CVE-2026-96257 | CVE Analysis and Report third-party-advisory
Submit #901889 | Fast FAC1203R Gigabit Edition 20200116_2.0.4 Stack-based Buffer Overflow third-party-advisory
https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-copy_msg_element exploit

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (5)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-copy_msg_element cna@vuldb.com
https://vuldb.com/cve/CVE-2026-96257 cna@vuldb.com
https://vuldb.com/submit/901889 cna@vuldb.com
https://vuldb.com/vuln/408707 cna@vuldb.com
https://vuldb.com/vuln/408707/cti cna@vuldb.com

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-24 11:08 UTC
CVE-2026-0257 PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

web:security.paloaltonetworks.com

Palo Alto Networks Security Advisory: CVE - 2026 -0257 PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

2026-09-24 11:08 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-24 11:08 UTC
Description of the security update for Office 2016: August 11, 2026 ...

web:support.microsoft.com

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?) How to get and install the update Method 1: Microsoft Update This update is available from Microsoft Update. When you turn on ...

2026-09-24 11:08 UTC
Patch Now: Palo Alto Auth Bypass Bug Under Active Exploit

web:www.darkreading.com

Patch Now: Another Palo Alto Auth Bypass Bug Under Active Exploit Exploiting the PAN-OS GlobalProtect VPN vulnerability requires certain conditions, but adversaries have done so in two attack ...

2026-09-24 11:08 UTC
Palo Alto Networks PAN-OS GlobalProtect Auth Bypass

web:www.fortiguard.com

Background CVE - 2026 -0257 is a high-severity authentication bypass vulnerability affecting the GlobalProtect portal and gateway components of Palo Alto Networks PAN-OS and certain Prisma Access deployments. Successful exploitation allows an unauthenticated remote attacker to bypass security controls and establish unauthorized VPN connections without valid credentials. Palo Alto Networks, Unit ...

2026-09-24 11:08 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-24 11:08 UTC
Oracle Critical Security Patch Update Advisory - June 2026

web:www.oracle.com

Additional CVEs addressed are: The patch for CVE - 2026 -34481 also addresses CVE - 2026 -34477, CVE - 2026 -34478, CVE - 2026 -34479, and CVE - 2026 -34480. Oracle Fusion Middleware Risk Matrix This Critical Security Patch Update contains 106 new security patches for Oracle Fusion Middleware. 53 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a ...

2026-09-24 11:08 UTC
CVE-2026-0257 Explained: The PAN-OS GlobalProtect Authentication Bypass

web:www.picussecurity.com

How to Mitigate and Remediate CVE - 2026 -0257 Patch first. The permanent fix is upgrading to a fixed PAN-OS release. After patching, GlobalProtect users re-authenticate once because the appliance regenerates cookies using stronger, integrity-checked validation.

2026-09-24 11:08 UTC
CVE-2026-0257: PAN-OS GlobalProtect Auth Bypass Flaw - SentinelOne

web:www.sentinelone.com

CVE - 2026 -0257 is an authentication bypass vulnerability in PAN-OS GlobalProtect. Learn about its impact, affected versions, and mitigation methods.

2026-09-24 11:08 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-96257.json.

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