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WatchlistCritical

CVE-2007-3927Imail Server Vulnerability

Multiple buffer overflows in Ipswitch IMail Server 2006 before 2006.21 (1) allow remote attackers to execute arbitrary code via unspecified vectors in Imailsec and (2) allow attackers to have an unknown impact via an unspecified vector related to "subscribe."

Published Jul 20, 2007 · Updated Apr 22, 2026

Key Facts

Patch immediately
  • CVE-2007-3927 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Imail Server (Ipswitch), Ipswitch Collaboration Suite.
  • It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
  • EPSS estimates a 22% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Imail Server 2006.2, Ipswitch Collaboration Suite 2006.2.
  • 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)

22%

Higher than 97.6% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

35/100

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

1

Proof-of-concept links

In-the-wild evidence

0

Reports of active use

Advisories And Exploit References

Description

Multiple buffer overflows in Ipswitch IMail Server 2006 before 2006.21 (1) allow remote attackers to execute arbitrary code via unspecified vectors in Imailsec and (2) allow attackers to have an unknown impact via an unspecified vector related to "subscribe."

Affected Products

2 affected entries in total
ProductAffected versionsFixed in
Imail ServerIpswitchSee advisory2006.2
Ipswitch Collaboration SuiteIpswitchSee advisory2006.2

Patched Releases

Imail Server

2006.2

Ipswitch Collaboration Suite

2006.2

Timeline

  1. Publicly disclosed

    Jul 20, 2007

  2. Last updated

    Apr 22, 2026

References

4 more references in the full CVE brief

FAQ

Common Questions.

Is CVE-2007-3927 On Your Attack Surface?

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Figures as of Oct 20, 2026. Compiled by Brandefense technologies from public vulnerability catalogs; scoring as described in How it works.

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