Is CVE-2020-14454 in the CISA KEV catalog?

No. CVE-2020-14454 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-14454?

CVE-2020-14454 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2020-14454?

CVE-2020-14454 has an EPSS score of 0.75% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-14454?

Upgrade Mattermost to 4.4.0 or later.

CVE & CISA-KEV Catalog

CVE-2020-14454

MEDIUM

6.1

CVSS v3

NVD

Description

An issue was discovered in Mattermost Desktop App before 4.4.0. Attackers can open web pages in the desktop application because server redirection is mishandled, aka MMSA-2020-0008.

CWE-601Open Redirect

How to fix

Remediation Available

MattermostWindows application

Affected:4.4.0Fixed in:4.4.0Mattermost, Inc.

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 ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

0.75%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Vendor Advisory1

mattermost.com

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	Fix

Embed a live status badge for CVE-2020-14454

Markdown

[![CVE-2020-14454](https://tridentstack.com/cve/badge/CVE-2020-14454.svg)](https://tridentstack.com/cve/CVE-2020-14454)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-14454"><img src="https://tridentstack.com/cve/badge/CVE-2020-14454.svg" alt="CVE-2020-14454"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.