CVE-2002-2388: Buffer overflow in INweb POP3 mail server 2.01 allows remote attackers to cause a denial of service (crash) vi

Routine

MEDIUM 5.0DOWNGRADE

CVE-2002-2388 is a medium-severity flaw (CVSS 5.0) affecting mail server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in INweb POP3 mail server 2.01 allows remote attackers to cause a denial of service (crash) via a long HELO command.

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	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-119
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: inweb

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

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:01 UTCUpdated Record last modified

inweb mail server DOWNGRADE

Affected: 2.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.01

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 2.01 (Debian / Ubuntu)

apt-cache madison mail-server sudo apt install mail-server=<VERSION_BEFORE_2.01> 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_2.01> 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.

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-2002-2388?

mail server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-2388 being exploited?

CVE-2002-2388 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-2002-2388 affect?

CVE-2002-2388 affects mail server. Severity is medium (CVSS 5.0). Buffer overflow in INweb POP3 mail server 2.01 allows remote attackers to cause a denial of service (crash) via a long HELO command.

How urgent is CVE-2002-2388?

Priority 35/100. No elevated risk signals yet.

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References

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