CVE-2025-40630

Open redirection vulnerability in IceWarp Mail Server

CVSS 5.1 MEDIUMEPSS 0.4%CWE-601

Vexday Risk Score

28Low

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 5.1EPSS 0.4%KEV nãoPoC —Nuclei simMetasploit —Patch —

Lifecycle

16 May 2025Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

Affected products

Icewarp · Icewarp Mail Server

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References

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