Is CVE-2020-4126 in the CISA KEV catalog?

No. CVE-2020-4126 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-4126?

CVE-2020-4126 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-4126?

CVE-2020-4126 has an EPSS score of 0.67% (47th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-4126?

Upgrade hcl inotes to 11.0.1 or later.

CVE & CISA-KEV Catalog

CVE-2020-4126

MEDIUM

5.9

CVSS v3

NVD

Description

HCL iNotes is susceptible to a sensitive cookie exposure vulnerability. This can allow an unauthenticated remote attacker to capture the cookie by intercepting its transmission within an http session. Fixes are available in HCL Domino and iNotes versions 10.0.1 FP6 and 11.0.1 FP2 and later.

CWE-311

How to fix

Remediation Available

hcl inotesNVD

Affected:>= 11.0.0, < 11.0.1Fixed in:11.0.1CVE-2020-4126derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.67%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Vendor Advisory1

support.hcltechsw.com

Related Vulnerabilities

Other CWE-311 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-27944	Critical	9.8	22%	-	Fix
CVE-2026-34486	High	7.5	16%	-	-
CVE-2019-11367	Critical	9.8	2.8%	-	Fix
CVE-2017-8221	High	7.5	2.7%	-	-
CVE-2016-10593	High	8.1	2.3%	-	-
CVE-2018-10698	Critical	9.8	2.3%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.