Medium severity · published May 16, 2025
CVE-2025-40630
Open redirection vulnerability in IceWarp Mail Server
6.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IM
Icewarp Mail Server · Icewarp
11.4.0 · source: vendor
MS
Mail Server · Icewarp
11.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40630
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-40630
Third Party Advisory
https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server
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HTTP host header injection vulnerability in IceWarp Mail Server