CVE-2006-0449: Early termination vulnerability in the IMAP service in E-Post Mail 4.05 and SPA-PRO Mail 4.05 allows remote at

Routine

MEDIUM 5.0DOWNGRADEDOWNGRADE

CVE-2006-0449 is a medium-severity flaw (CVSS 5.0) affecting mail server, spa-pro mail atsolomon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Early termination vulnerability in the IMAP service in E-Post Mail 4.05 and SPA-PRO Mail 4.05 allows remote attackers to cause a denial of service (infinite loop) by sending an APPEND command and disconnecting before the expected amount of data is sent.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Published	2006-01-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: e-post corporation

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

Am I affected?

Timeline

2006-01-27 00:03 UTCPublished CVE record published
2026-06-16 22:20 UTCUpdated Record last modified

e-post corporation mail server DOWNGRADE

Affected: 4.05

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.05

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.05 (Debian / Ubuntu)

apt-cache madison mail-server sudo apt install mail-server=<VERSION_BEFORE_4.05> sudo apt-mark hold mail-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mail-server sudo dnf downgrade mail-server-<VERSION_BEFORE_4.05> sudo dnf versionlock add mail-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

e-post corporation spa-pro mail atsolomon DOWNGRADE

Affected: 4.05

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.05

1. Check installed version

apt-cache policy spa-pro-mail-atsolomon || rpm -q spa-pro-mail-atsolomon || spa-pro-mail-atsolomon --version

2. No fixed release: DOWNGRADE to a release before 4.05 (Debian / Ubuntu)

apt-cache madison spa-pro-mail-atsolomon sudo apt install spa-pro-mail-atsolomon=<VERSION_BEFORE_4.05> sudo apt-mark hold spa-pro-mail-atsolomon

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list spa-pro-mail-atsolomon sudo dnf downgrade spa-pro-mail-atsolomon-<VERSION_BEFORE_4.05> sudo dnf versionlock add spa-pro-mail-atsolomon

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2006-0449?

mail server: downgrade or apply the listed mitigation; spa-pro mail atsolomon: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-0449 being exploited?

CVE-2006-0449 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-2006-0449 affect?

CVE-2006-0449 affects mail server, spa-pro mail atsolomon. Severity is medium (CVSS 5.0). Early termination vulnerability in the IMAP service in E-Post Mail 4.05 and SPA-PRO Mail 4.05 allows remote attackers to cause a denial of service (infinite loop) by sending an APPEND command and disconnecting before the expected amount of

How urgent is CVE-2006-0449?

Priority 37/100. No elevated risk signals yet.

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References

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