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Vulnerability record · CVE-2025-11845 · published 24 February 2026

CVE-2025-11845: Zyxel lte3301-plus firmware null pointer dereference vulnerability

Zyxel · Lte3301 Plus Firmware

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.

4.9 CVSS 3.1 Medium EPSS 0.81% · top 44.5% CWE-476 · NULL pointer dereference
4.9CVSS 3.1 base score
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
54Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

54 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-com Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-11845), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.