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Findings

CVE-2025-11845

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 W…

Published Feb 24, 2026 · updated Jun 17, 2026 · 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.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 24, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Affected

  • cpe zyxel/dx3300-t1 firmwareversion unspecified
  • cpe zyxel/dx3301-t0 firmwareversion unspecified
  • cpe zyxel/dx4510-b0 firmwareversion unspecified
  • cpe zyxel/dx4510-b1 firmwareversion unspecified
  • cpe zyxel/dx5401-b1 firmwareversion unspecified
  • cpe zyxel/ee3301-00 firmwareversion unspecified
  • cpe zyxel/ee5301-00 firmwareversion unspecified
  • cpe zyxel/lte3301-plus firmwareversion unspecified
  • cpe zyxel/nebula fwa505 firmwareversion unspecified
  • cpe zyxel/nebula fwa510 firmwareversion unspecified
  • cpe zyxel/nebula fwa515 firmwareversion unspecified
  • cpe zyxel/nebula fwa710 firmwareversion unspecified

Sources

  • NIST NVDVulnerability recordCVE-2025-11845

    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 priv

    nvd.nist.gov

References