Which products and versions are affected by CVE-2006-4379?

Affected: Imail Plus (Ipswitch) versions 2006; Imail Secure Server (Ipswitch) versions 2006; Ipswitch Collaboration Suite versions 2006_premium, 2006_standard. The full list is in the CVE brief.

Is CVE-2006-4379 being exploited in the wild?

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

Is CVE-2006-4379 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-2006-4379?

Public exploit code is available.

Is there a fix for CVE-2006-4379?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2006-4379 be patched?

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

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Vulnerability Intelligence

CVE-2006-4379

HighPublic exploit

Stack-based buffer overflow in the SMTP Daemon in Ipswitch Collaboration 2006 Suite Premium and Standard Editions, IMail, IMail Plus, and IMail Secure allows remote attackers to execute arbitrary code via a long string located after an '@' character and before a ':' character.

Published Sep 8, 2006 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2006-4379 is a high-severity vulnerability (CVSS 7.5 v2) affecting Imail Plus (Ipswitch), Imail Secure Server (Ipswitch), Ipswitch Collaboration Suite.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 61% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

7.5

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

EPSS (30-day exploit likelihood)

61%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2006-4379 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

4 affected entries in total

Product	Affected versions	Fixed in
Imail PlusIpswitch	2006	n/a
Imail Secure ServerIpswitch	2006	n/a
Ipswitch Collaboration SuiteIpswitch	2006_premium, 2006_standard	n/a

Timeline

Publicly disclosed
Sep 8, 2006
Last updated
Apr 15, 2026

References

advisory21795
patchhttp://www.ipswitch.com/support/ics/updates/ics20061.asp
patch19885
patchhttp://www.zerodayinitiative.com/advisories/ZDI-06-028.html
exploitExploitDB-2601

8 more references in the full CVE brief

FAQ

Common Questions.

Stack-based buffer overflow in the SMTP Daemon in Ipswitch Collaboration 2006 Suite Premium and Standard Editions, IMail, IMail Plus, and IMail Secure allows remote attackers to execute arbitrary code via a long string located after an '@' character and before a ':' character.
Affected: Imail Plus (Ipswitch) versions 2006; Imail Secure Server (Ipswitch) versions 2006; Ipswitch Collaboration Suite versions 2006_premium, 2006_standard. 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.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2006-4379 Running On Your Attack Surface?

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