CVE-2020-4107

Local privilege escalation, disclosure, and service interruption

Published May 19, 2022 · Updated Sep 16, 2024

Improper access control in HCL Domino 9, 10, and 11 allows local users to elevate privileges, interrupt service, or disclose data. HCL ties protection to the SharedMemoryAllowOnly setting, but has not published the affected shared-memory operation or its incorrect permission check. Exploitation requires an authenticated account with local system access; consequences include privilege gain, service interruption, and data disclosure.

CVSS severity8.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in HCL Domino 9, 10, and 11 allows local users to elevate privileges, interrupt service, or disclose data. HCL ties protection to the SharedMemoryAllowOnly setting, but has not published the affected shared-memory operation or its incorrect permission check. Exploitation requires an authenticated account with local system access; consequences include privilege gain, service interruption, and data disclosure.

The record

CVE
CVE-2020-4107
Published
May 19, 2022
Updated
Sep 16, 2024
Vendor
HCL Software
Product
HCL Domino
Classifications
CWE-284, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=9, 10 and 11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

HCL Software · HCL Dominoversion=9, 10 and 11

Published CVSS scores

8.8HCL SoftwareCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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