Is CVE-2022-45419 in the CISA KEV catalog?

No. CVE-2022-45419 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-45419?

CVE-2022-45419 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2022-45419?

CVE-2022-45419 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-45419?

Upgrade firefox on debian unstable to 107.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2022-45419

MEDIUM

6.5

CVSS v3

NVD

Description

If the user added a security exception for an invalid TLS certificate, opened an ongoing TLS connection with a server that used that certificate, and then deleted the exception, Firefox would have kept the connection alive, making it seem like the certificate was still trusted. This vulnerability affects Firefox < 107.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

firefoxDebian

Fixed in:107.0-1CVE-2022-45419

firefoxUbuntu

Fixed in:107.0+build2-0ubuntu0.18.04.1USN-5726-1

Fixed in:107.0+build2-0ubuntu0.20.04.1USN-5726-1

DeveloperEditionWindows application

Affected:107.0Fixed in:107.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:107.0Fixed in:107.0Mozilla

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

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2020-0601	High	8.1	89%	KEV	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2022-26923	High	8.8	83%	KEV	Fix
CVE-2023-27823	Critical	9.8	53%	-	-
CVE-2022-42979	High	8.8	24%	-	-

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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 2025-04-15.