CVE-2001-0990: Inter7 vpopmail 4.10.35 and earlier, when using the MySQL module, compiles authentication information in clear

Routine

MEDIUM 4.6WATCHLISTDOWNGRADE

CVE-2001-0990 is a medium-severity flaw (CVSS 4.6) affecting vpopmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Inter7 vpopmail 4.10.35 and earlier, when using the MySQL module, compiles authentication information in cleartext into the libvpopmail.a library, which allows local users to obtain the MySQL username and password by inspecting the vpopmail programs that use the library.

Why this priority

On your watchlist

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Published	2001-09-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: inter7

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

Am I affected?

Timeline

2001-09-04 04:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

inter7 vpopmail DOWNGRADE

Affected: 3.4.1 · 3.4.2 · 3.4.3 · 3.4.4 · 3.4.5 · 3.4.6 · 3.4.7 · 3.4.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.1

1. Check installed version

apt-cache policy vpopmail || rpm -q vpopmail || vpopmail --version

2. No fixed release: DOWNGRADE to a release before 3.4.1 (Debian / Ubuntu)

apt-cache madison vpopmail sudo apt install vpopmail=<VERSION_BEFORE_3.4.1> sudo apt-mark hold vpopmail

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

dnf --showduplicates list vpopmail sudo dnf downgrade vpopmail-<VERSION_BEFORE_3.4.1> sudo dnf versionlock add vpopmail

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-2001-0990?

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

Is CVE-2001-0990 being exploited?

CVE-2001-0990 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-2001-0990 affect?

CVE-2001-0990 affects vpopmail. Severity is medium (CVSS 4.6). Inter7 vpopmail 4.10.35 and earlier, when using the MySQL module, compiles authentication information in cleartext into the libvpopmail.a library, which allows local users to obtain the MySQL username and password by inspecting the vpopmail

How urgent is CVE-2001-0990?

Priority 28/100. On your watchlist

Software pages

MySQL vulnerabilities

References

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