IceWarp gmaps Cross-Site Scripting Authentication Bypass Vulnerability

December 10th, 2025
ZDI-25-1071 ZDI-CAN-25441

CVE ID

CVE-2025-14499

CVSS Score

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

Affected Vendors

IceWarp

Affected Products

IceWarp

Vulnerability Details

This vulnerability allows remote attackers to bypass authentication on affected installations of IceWarp. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of a parameter passed to the gmaps webpage. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system.

Additional Details

IceWarp has issued an update to correct this vulnerability. More details can be found at:
https://support.icewarp.com/hc/en-us/community/posts/40040542307729-EPOS-Update-2-build-8-14-2-0-8

Disclosure Timeline

  • 2025-08-20 - Vulnerability reported to vendor
  • 2025-12-10 - Coordinated public release of advisory
  • 2025-12-11 - Advisory Updated

Credit

Nicolas Chatelain

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