CVE-2005-1255Imail Vulnerability
Multiple stack-based buffer overflows in the IMAP server in IMail 8.12 and 8.13 in Ipswitch Collaboration Suite (ICS), and other versions before IMail Server 8.2 Hotfix 2, allow remote attackers to execute arbitrary code via a LOGIN command with (1) a long username argument or…
Published May 25, 2005 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2005-1255 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. Public exploit code is available.
- EPSS estimates a 43% probability of exploitation in the next 30 days.
- Fixed versions are available, including Imail Server 8.2_hotfix_2.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
43%
Higher than 98.7% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
50/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
3
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
Multiple stack-based buffer overflows in the IMAP server in IMail 8.12 and 8.13 in Ipswitch Collaboration Suite (ICS), and other versions before IMail Server 8.2 Hotfix 2, allow remote attackers to execute arbitrary code via a LOGIN command with (1) a long username argument or (2) a long username argument that begins with a special character.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ImailIpswitch | 8.12, 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
- advisory20050524 Ipswitch IMail IMAP LOGIN Remote Buffer Overflow Vulnerabilities
- patchipswitch.com · im82hf2.html
- exploitExploitDB-1035
- exploitExploitDB-1124
- exploitExploitDB-3627
FAQ
Common Questions.
Multiple stack-based buffer overflows in the IMAP server in IMail 8.12 and 8.13 in Ipswitch Collaboration Suite (ICS), and other versions before IMail Server 8.2 Hotfix 2, allow remote attackers to execute arbitrary code via a LOGIN command with (1) a long username argument or (2) a long username argument that begins…
Affected: Imail (Ipswitch) versions 8.12, 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.
Public exploit code is available.
Fixed versions are available, including Imail Server 8.2_hotfix_2.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2005-1255 On Your Attack Surface?
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