How severe is CVE-2005-4080?

CVE-2005-4080 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2005-4080 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4080?

CVE-2005-4080 primarily affects Horde Imp. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-4080?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2005-4080 published?

CVE-2005-4080 was published on 2005-12-08 and last updated on 2026-06-16.

CVE-2005-4080

CVE-2005-4080 is a medium-severity vulnerability in Horde Imp with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Horde Imp
Published: 2005-12-08
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2005-4080?: 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.
How severe is CVE-2005-4080?: CVE-2005-4080 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2005-4080 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4080?: CVE-2005-4080 primarily affects Horde Imp. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-4080?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-4080 published?: CVE-2005-4080 was published on 2005-12-08 and last updated on 2026-06-16.

References

Affected products (25)

cpe:2.3:a:horde:imp:2.0:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.7:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.2.8:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:2.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.0:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.2:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.3:*:*:*:*:*:*:*
cpe:2.3:a:horde:imp:4.0.4:*:*:*:*:*:*:*

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