CVE-2005-4080

Horde IMP 4.0.4 and earlier does not sanitize strings containing UTF16 null characters, which...

4.3 MediumPublic exploit

Horde IMP 4.0.4 and earlier does not sanitize strings containing UTF16 null characters, which allows remote attackers to conduct cross-site scripting (XSS) attacks via UTF16 encoded attachments and strings that will be executed when viewed using Internet Explorer, which ignores the characters.

Exploit likelihood

2.40%Down 0.5 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2005-4080
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-4080
Updated: 2026-11-02

EUVDEUVD-2005-4075 No score

Record: EUVD-2005-4075
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8xjp-h5q2-g6vf No score

Horde IMP 4.0.4 and earlier does not sanitize strings containing UTF16 null characters, which...

Record: GHSA-8xjp-h5q2-g6vf
Updated: 2026-11-02

Affected products

horde imp

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Horde IMP 2.2.x/3.2.x/4.0.x - Email Attachments HTML Injection	2005-12-06

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-4080 is a medium vulnerability (CVSS 4.3) in Horde Imp, published December 8, 2005. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.40%, the 84th percentile. No source names a fixed version.