No exploitation reportedFix available

CVE-2020-14230

Q: Is CVE-2020-14230 actively exploited?

Active exploitation of CVE-2020-14230 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-14230?

CVE-2020-14230 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2020-11-21
Fixed in11.0.1 · 10.0.1 · 9.0.1
WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

HCL Domino is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the server. Versions previous to releases 9.0.1 FP10 IF6, 10.0.1 FP5 and 11.0.1 are affected.

Timeline

dates in UTC

2020-11-2118:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-14230?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-14230?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Hcltech domino

Branch	Affected	Fixed in	Source
11.0	≥ 11.0.0, < 11.0.1	11.0.1	NVD
10.0	≥ 10.0.0, < 10.0.1	10.0.1	NVD
9.0	< 9.0.1	9.0.1	NVD
9.0	= 9.0.1	no fix published	NVD
10.0	= 10.0.1	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Hcltech domino to 11.0.1 · 10.0.1 · 9.0.1

Advisories and patches

support.hcltechsw.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2020-11-21
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-14230?

Is CVE-2020-14230 actively exploited?

Active exploitation of CVE-2020-14230 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-14230?

CVE-2020-14230 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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