CVE-2025-11845

MEDIUM

Zyxel LTE3301-PLUS Firmware < 1.00(abqu.9)c0 - Authenticated Denial of Service via Certificate Downloader CGI Program

Title source: llm

Description

A null pointer dereference vulnerability in the certificate downloader CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(ABPM.9.6)C0 and the Zyxel WX3100-T0 firmware versions through 5.50(ABVL.4.8)C0 could allow an authenticated attacker with administrator privileges to trigger a denial-of-service (DoS) condition by sending a crafted HTTP request.

References (1)

Core 1

Core References

Various Sources vendor-advisory

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-02-24-2026

Scores

CVSS v3 4.9

EPSS 0.0078

EPSS Percentile 51.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (50)

zyxel/ax7501-b1_firmware < 5.17\(abpc.7.1\)c0

zyxel/dx3300-t0_firmware < 5.50\(abvy.7.1\)c0

zyxel/dx3300-t1_firmware < 5.50\(abvy.7.1\)c0

zyxel/dx3301-t0_firmware < 5.50\(abvy.7.1\)c0

zyxel/dx4510-b0_firmware < 5.17\(abyl.10.1\)c0

zyxel/dx4510-b1_firmware < 5.17\(abyl.10.1\)c0

zyxel/dx5401-b1_firmware < 5.17\(abyo.7.1\)c0

zyxel/ee3301-00_firmware < 5.63\(acmu.2.1\)c0

zyxel/ee5301-00_firmware < 5.63\(acld.2.1\)c0

zyxel/ee6510-10_firmware < 5.19\(acjq.4.1\)c0

... and 40 more

Published Feb 24, 2026

Tracked Since Feb 24, 2026