← Vulnerability feed

Vulnerability record · CVE-2025-11847 · published 24 February 2026

CVE-2025-11847: Zyxel ex3510-b1 firmware null pointer dereference vulnerability

Zyxel · Ex3510 B1 Firmware

A null pointer dereference vulnerability in the IP settings 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 1.8% · top 22.7% CWE-476 · NULL pointer dereference
4.9CVSS 3.1 base score
1.8%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 IP settings 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

Track CVE-2025-11847 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2025-13942Zyxel wx5610-b0 firmware os command injection vulnerabilityA command injection vulnerability in the UPnP function of the Zyxel EX3510-B0 firmware versions through 5.17(ABUP.15.1)C0 could allow a remote attack…EPSS 1.1%8.8CVE-2025-13943Zyxel ex5601-t1 firmware os command injection vulnerabilityA post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)…EPSS 1.4%8.8CVE-2025-8693Zyxel dm4200-b0 firmware os command injection vulnerabilityA post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could …EPSS 1.1%8.8CVE-2022-43390Zyxel lte7480-m804 firmware os command injection vulnerabilityA command injection vulnerability in the CGI program of Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker t…EPSS 1.1%7.5CVE-2025-6599Zyxel lte3301-plus firmware uncontrolled resource consumption vulnerabilityAn uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an …EPSS 0.31%7.5CVE-2024-8748Zyxel lte3301-plus firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmware versions through V5.50(ABO…EPSS 0.52%7.5CVE-2024-5412Zyxel nebula lte3301-plus firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability in the library "libclinkc" of the Zyxel VMG8825-T50K firmware version 5.50(ABOM.8)C0 could allow an unauthenticated a…EPSS 0.66%7.2CVE-2026-1460Zyxel nebula fwa70 firmware os command injection vulnerabilityA post-authentication command injection vulnerability in the “DomainName” parameter of the DHCP configuration file in Zyxel DX3301-T0 and EX3301-T0 f…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2025-11847), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.