PT-2025-21634 · Icewarp · Icewarp Mail Server

B3Xal · Published 2025-05-16 · Updated 2025-05-17 · CVE-2025-40631

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Icwarp Mail Server version 11.4.0

Description: The issue allows for HTTP host header injection, enabling the execution of arbitrary JavaScript code on page load when a user interacts with a malicious link. This is achieved by modifying the Host header and adding a payload.

Recommendations: For Icewarp Mail Server version 11.4.0, consider restricting access to the Host header modification functionality until a patch is available. As a temporary workaround, avoid using links from untrusted sources to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-644

Related Identifiers

CVE-2025-40631

Affected Products

Icewarp Mail Server

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-40631 · Security Note
• https://osv.dev/vulnerability/CVE-2025-40631 · Vendor Advisory
• https://incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server · Note
• https://t.me/cvetracker/24014 · Telegram Post
• https://twitter.com/CVEnew/status/1923600401917510134 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1923350481721548955 · Twitter Post