CVE-2002-2191: Lotus Domino 5.0.9a and earlier, even when configured with the 'DominoNoBanner=1' option, allows remote attack

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MEDIUM 5.0DOWNGRADE

CVE-2002-2191 is a medium-severity flaw (CVSS 5.0) affecting domino. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Lotus Domino 5.0.9a and earlier, even when configured with the 'DominoNoBanner=1' option, allows remote attackers to obtain potential sensitive information such as the version via a request for a non-existent .nsf database, which leaks the version in the HTTP banner.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: lotus

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 22:00 UTCUpdated Record last modified

lotus domino DOWNGRADE

Affected: 5.0.8 · 5.0.9 · 5.0.9a

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.0.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.0.8 (Debian / Ubuntu)

apt-cache madison domino sudo apt install domino=<VERSION_BEFORE_5.0.8> sudo apt-mark hold domino

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

dnf --showduplicates list domino sudo dnf downgrade domino-<VERSION_BEFORE_5.0.8> sudo dnf versionlock add domino

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.

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: Lotus Domino 5.0.8-9 - Non-Existent NSF Database Banner Information Disclosure

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-2002-2191?

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

Is CVE-2002-2191 being exploited?

CVE-2002-2191 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-2002-2191 affect?

CVE-2002-2191 affects domino. Severity is medium (CVSS 5.0). Lotus Domino 5.0.9a and earlier, even when configured with the 'DominoNoBanner=1' option, allows remote attackers to obtain potential sensitive information such as the version via a request for a non-existent .nsf database, which leaks the

How urgent is CVE-2002-2191?

Priority 44/100. Public exploit reference

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References

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