CVE-2025-40631 | BDVDB-2026-279192 Detail

IcewarpIcewarp Mail Server

Description#

HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact none, availability impact none. Attack vector: adjacent.

Weaknesses#

CWE-644 Improper Neutralization of HTTP Headers for Scripting Syntax

References#

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

Exploit#

No public exploit known

History#

Version 12025-05-16Record published in the CVE List.

Published

Published: 2025-05-16
Last modified: 2025-05-16

Vendor information

Vendor: Icewarp
Product: Icewarp Mail Server

All Icewarp vulnerabilities

Score

2.0 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 13.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
11.4.0
Fixed
Not stated

Scoring System

CVSS v4.0

2.0 Low

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

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	High
Attack Requirements	None
Privileges Required	None
User Interaction	Active
Vulnerable System Confidentiality	None
Vulnerable System Integrity	None
Vulnerable System Availability	None
Subsequent System Confidentiality	Low
Subsequent System Integrity	Low
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).