# Zyxel VMG4005-B50B vulnerabilities

Source: https://junglewise.ai/threats/technologies/vmg4005-b50b  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/vmg4005-b50b.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Zyxel VMG4005-B50B: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-3871, was published on 2 June 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 3 (0 critical, 0 exploited in the wild)

## About Zyxel VMG4005-B50B

The VMG4005-B50B is a VDSL2 bridge modem designed for high-speed internet connectivity.

## Latest Zyxel VMG4005-B50B vulnerabilities

- [CVE-2026-3871: Zyxel multiple CPE devices buffer overflow in UPnP DeletePortMapping](https://junglewise.ai/threats/cve-2026-3871-zyxel-multiple-cpe-devices-buffer-overflow-in-upnp) (medium, CVSS 6.5, published 2 Jun 2026)
- [CVE-2026-3870: Zyxel VMG4005-B50B buffer overflow in UPnP AddPortMapping](https://junglewise.ai/threats/cve-2026-3870-zyxel-vmg4005-b50b-buffer-overflow-in-upnp-addportmapping) (medium, CVSS 6.5, published 2 Jun 2026)
- [CVE-2025-6599: An uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version…](https://junglewise.ai/threats/cve-2025-6599-an-uncontrolled-resource-consumption-vulnerability-in-the-web) (medium, CVSS 5.3, published 18 Nov 2025)

## Most severe Zyxel VMG4005-B50B vulnerabilities

- [CVE-2026-3871: Zyxel multiple CPE devices buffer overflow in UPnP DeletePortMapping](https://junglewise.ai/threats/cve-2026-3871-zyxel-multiple-cpe-devices-buffer-overflow-in-upnp) (medium, CVSS 6.5, published 2 Jun 2026)
- [CVE-2026-3870: Zyxel VMG4005-B50B buffer overflow in UPnP AddPortMapping](https://junglewise.ai/threats/cve-2026-3870-zyxel-vmg4005-b50b-buffer-overflow-in-upnp-addportmapping) (medium, CVSS 6.5, published 2 Jun 2026)
- [CVE-2025-6599: An uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version…](https://junglewise.ai/threats/cve-2025-6599-an-uncontrolled-resource-consumption-vulnerability-in-the-web) (medium, CVSS 5.3, published 18 Nov 2025)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Zyxel technologies

- [Zyxel Firewalls](https://junglewise.ai/threats/technologies/firewalls): 5 vulnerabilities
- [Zyxel Multiple Firewalls](https://junglewise.ai/threats/technologies/multiple-firewalls): 5 vulnerabilities
- [Zyxel AX7501-B1 firmware](https://junglewise.ai/threats/technologies/ax7501-b1-firmware): 3 vulnerabilities
- [Zyxel DX3300-T0](https://junglewise.ai/threats/technologies/dx3300-t0): 3 vulnerabilities
- [Zyxel EX3501-T0](https://junglewise.ai/threats/technologies/ex3501-t0): 3 vulnerabilities
- [Zyxel Nebula FWA515](https://junglewise.ai/threats/technologies/nebula-fwa515): 3 vulnerabilities
- [Zyxel Wre6505](https://junglewise.ai/threats/technologies/wre6505): 3 vulnerabilities
- [Zyxel Wre6505 Firmware](https://junglewise.ai/threats/technologies/wre6505-firmware): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Zyxel VMG4005-B50B vulnerabilities", https://junglewise.ai/threats/technologies/vmg4005-b50b, 9 November 2026.