PT-2026-33922 · Zervit · Portable Http/Web Server

Rafael Pedrero · Published 2026-04-21 · Updated 2026-04-21 · CVE-2025-13826

Mitre

CVSS v4.0

8.2

High

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:Y/R:U/V:D/RE:L

Zervit's portable HTTP/web server is vulnerable to remote DoS attacks when a configuration reset request is made. The vulnerability is caused by inadequate validation of user-supplied input. An attacker can exploit this vulnerability by sending malicious requests. If the vulnerability is successfully exploited, the application can be made to stop responding, resulting in a DoS condition. It is possible to manually restart the application.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2025-13826

Affected Products

Portable Http/Web Server

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2025-13826 · Security Note
• https://incibe.es/en/incibe-cert/notices/aviso/incorrect-input-validation-zervit-portable-httpweb-server · Note