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CVE-2020-4089

HCL Notes is vulnerable to an information leakage vulnerability through its support for the 'mailto' protocol. This vulnerability could…

Medium6.5EPSS 1.2%
Published
Updated
Reserved
Assigned by
HCL

Description

HCL Notes is vulnerable to an information leakage vulnerability through its support for the 'mailto' protocol. This vulnerability could result in files from the user's filesystem or connected network filesystems being leaked to a third party. All versions of HCL Notes 9, 10 and 11 are affected.

Scores

CVSS scores of CVE-2020-4089, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
1.2% · top 33% of all CVEs (6 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.

Weakness

  • "Information Leakage"

Affected products

  • HCL · HCL Notes

    • affected All versions of HCL Notes v9
    • affected All versions of HCL Notes v10
    • affected All versions of HCL Notes v11

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .