CVE-2025-13826 HIGH

CVE-2025-13826: Incorrect input validation on the Zervit portable HTTP/Web server

Vendor Zervit
Product portable HTTP/Web server
Weakness CWE-20 · Input validation
Published April 21, 2026
Last update April 21, 2026
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
April 21, 2026 Record updated