CVE-2023-28010: In some configuration scenarios, the Domino server host name can be exposed

Routine

MEDIUM 4.0REMOTEDOWNGRADE

CVE-2023-28010 is a medium-severity flaw (CVSS 4.0) affecting domino. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In some configuration scenarios, the Domino server host name can be exposed. This information could be used to target future attacks.

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	4.0 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-200
Published	2023-09-08
Last modified	2026-06-17

Publisher (CNA): HCL Software · Vendor: hcltech

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-08 18:15 UTCPublished CVE record published
2026-06-17 05:46 UTCUpdated Record last modified

hcltech domino DOWNGRADE

Affected: 12.0.2 · 12.0.2 fixpack_1

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.0.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 12.0.2 (Debian / Ubuntu)

apt-cache madison domino sudo apt install domino=<VERSION_BEFORE_12.0.2> sudo apt-mark hold domino

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

dnf --showduplicates list domino sudo dnf downgrade domino-<VERSION_BEFORE_12.0.2> 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.

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-2023-28010?

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

Is CVE-2023-28010 being exploited?

CVE-2023-28010 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-2023-28010 affect?

CVE-2023-28010 affects domino. Severity is medium (CVSS 4.0). In some configuration scenarios, the Domino server host name can be exposed. This information could be used to target future attacks.

How urgent is CVE-2023-28010?

Priority 27/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-23562 MEDIUM 5.3 DOWNGRADE A security vulnerability in HCL Domino could allow disclosure of sensitive configuration information
CVE-2023-37539 HIGH 8.4 DOWNGRADE The Domino Catalog template is susceptible to a Stored Cross-Site Scripting (XSS) vulnerability
CVE-2023-37495 MEDIUM 5.9 UPGRADE Internet passwords stored in Person documents in the Domino® Directory created using the "Add Person" action o
CVE-2022-44754 CRITICAL 9.8 DOWNGRADE HCL Domino is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView
CVE-2022-44752 CRITICAL 9.8 DOWNGRADE HCL Domino is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView

References

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