Which products and versions are affected by CVE-2005-1256?

Affected: Imail (Ipswitch) versions 8.13; Imail Server (Ipswitch); Ipswitch Collaboration Suite. The full list is in the CVE brief.

Is CVE-2005-1256 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2005-1256 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2005-1256?

No public exploit code is known.

Is there a fix for CVE-2005-1256?

Fixed versions are available, including Imail Server 8.2_hotfix_2.

How urgently should CVE-2005-1256 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2005-1256

Critical

Stack-based buffer overflow in the IMAP daemon (IMAPD32.EXE) in IMail 8.13 in Ipswitch Collaboration Suite (ICS), and other versions before IMail Server 8.2 Hotfix 2, allows remote authenticated users to execute arbitrary code via a STATUS command with a long mailbox name.

Published May 25, 2005 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2005-1256 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Imail (Ipswitch), Imail Server (Ipswitch), Ipswitch Collaboration Suite.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 59% probability of exploitation in the next 30 days.
Fixed versions are available, including Imail Server 8.2_hotfix_2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

10.0

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

59%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2005-1256 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
ImailIpswitch	8.13	n/a
Imail ServerIpswitch	See advisory	8.2_hotfix_2
Ipswitch Collaboration SuiteIpswitch	See advisory	n/a

Patched Releases

Imail Server

8.2_hotfix_2

Timeline

Publicly disclosed
May 25, 2005
Last updated
Apr 15, 2026

References

FAQ

Common Questions.

Stack-based buffer overflow in the IMAP daemon (IMAPD32.EXE) in IMail 8.13 in Ipswitch Collaboration Suite (ICS), and other versions before IMail Server 8.2 Hotfix 2, allows remote authenticated users to execute arbitrary code via a STATUS command with a long mailbox name.
Affected: Imail (Ipswitch) versions 8.13; Imail Server (Ipswitch); Ipswitch Collaboration Suite. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Imail Server 8.2_hotfix_2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2005-1256 Running On Your Attack Surface?

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