CVE-2001-0847: Lotus Domino Web Server 5.x allows remote attackers to gain sensitive information by accessing the default nav

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HIGH 7.5DOWNGRADE

CVE-2001-0847 is a high-severity flaw (CVSS 7.5) affecting domino web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Lotus Domino Web Server 5.x allows remote attackers to gain sensitive information by accessing the default navigator $defaultNav via (1) URL encoding the request, or (2) directly requesting the ReplicaID.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2001-12-06
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

2001-12-06 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

lotus domino web server DOWNGRADE

Affected: 5.x

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.x

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.x (Debian / Ubuntu)

apt-cache madison domino-web-server sudo apt install domino-web-server=<VERSION_BEFORE_5.x> sudo apt-mark hold domino-web-server

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

dnf --showduplicates list domino-web-server sudo dnf downgrade domino-web-server-<VERSION_BEFORE_5.x> sudo dnf versionlock add domino-web-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-2001-0847?

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

Is CVE-2001-0847 being exploited?

CVE-2001-0847 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-2001-0847 affect?

CVE-2001-0847 affects domino web server. Severity is high (CVSS 7.5). Lotus Domino Web Server 5.x allows remote attackers to gain sensitive information by accessing the default navigator $defaultNav via (1) URL encoding the request, or (2) directly requesting the ReplicaID.

How urgent is CVE-2001-0847?

Priority 47/100. High severity

References

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