CVE-2025-40630

MEDIUM NUCLEI

IceWarp Mail Server 11.4.0 - Open Redirect via Malicious URL

Title source: llm

Exploitation Summary

CVE-2025-40630 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

Description

Open redirection vulnerability in IceWarp Mail Server affecting version 11.4.0. This vulnerability allows an attacker to redirect a user to any domain by sending a malicious URL to the victim, for example “ https://icewarp.domain.com//<MALICIOUS_DOMAIN>/%2e%2e” https://icewarp.domain.com///%2e%2e” . This vulnerability has been tested in Firefox.

Nuclei Templates (1)

IceWarp Mail Server ≤11.4.0 - Open Redirect

MEDIUMVERIFIEDby DhiyaneshDK

Shodan: http.title:"IceWarp"

FOFA: title="IceWarp"

References (1)

Core 1

Core References

Third Party Advisory

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server

Scores

CVSS v3 6.1

EPSS 0.0043

EPSS Percentile 33.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-601

Status published

Products (1)

icewarp/mail_server 11.4.0

Published May 16, 2025

Tracked Since Feb 18, 2026