CVE-2008-3607: The IMAP server in NoticeWare Email Server NG 4.6.3 and earlier allows remote attackers to cause a denial of s

Q: How do I fix CVE-2008-3607?

email server: upgrade to newer than 4.6.3. Exact commands for each OS are on this page.

Q: Is CVE-2008-3607 being exploited?

CVE-2008-3607 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2008-3607 affect?

CVE-2008-3607 affects email server. Severity is medium (CVSS 5.0). The IMAP server in NoticeWare Email Server NG 4.6.3 and earlier allows remote attackers to cause a denial of service (daemon crash) via multiple long LOGIN commands.

Q: How urgent is CVE-2008-3607?

Priority 44/100. Public exploit reference

This month

MEDIUM 5.0UPGRADE

CVE-2008-3607 is a medium-severity flaw (CVSS 5.0) affecting email server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The IMAP server in NoticeWare Email Server NG 4.6.3 and earlier allows remote attackers to cause a denial of service (daemon crash) via multiple long LOGIN commands.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-20
Published	2008-08-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: noticeware

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2008-08-12 19:41 UTCPublished CVE record published
2026-06-16 22:56 UTCUpdated Record last modified

noticeware email server UPGRADE

Affected: <= 4.6.3 · 4.2.1 · 4.2.2 · 4.2.3 · 4.2.4 · 4.3.1 · 4.3.2 · 4.3.4

Fixed in: newer than 4.6.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy email-server || rpm -q email-server || email-server --version

2. UPGRADE to newer than 4.6.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade email-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade email-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Noticeware Email Server 4.6 - NG LOGIN Messages Denial of Service

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2008-3607?

email server: upgrade to newer than 4.6.3. Exact commands for each OS are on this page.

Is CVE-2008-3607 being exploited?

CVE-2008-3607 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2008-3607 affect?

CVE-2008-3607 affects email server. Severity is medium (CVSS 5.0). The IMAP server in NoticeWare Email Server NG 4.6.3 and earlier allows remote attackers to cause a denial of service (daemon crash) via multiple long LOGIN commands.

How urgent is CVE-2008-3607?

Priority 44/100. Public exploit reference

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References

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