Is CVE-2024-26283 in the CISA KEV catalog?

No. CVE-2024-26283 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-26283?

CVE-2024-26283 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2024-26283?

CVE-2024-26283 has an EPSS score of 0.28% (20th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-26283?

Upgrade DeveloperEdition to 123.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2024-26283

HIGH

7.8

CVSS v3

NVD

Description

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme. This vulnerability affects Firefox for iOS < 123.

CWE-83

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:123.0Fixed in:123.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:123.0Fixed in:123.0Mozilla

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-83 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-37908	Critical	9.0	1.1%	-	Fix
CVE-2025-4615	High	7.2	0.7%	-	Fix
CVE-2023-32070	Critical	9.0	0.7%	-	-
CVE-2022-39262	Medium	5.2	0.6%	-	Fix
CVE-2024-52595	High	7.7	0.5%	-	Fix
CVE-2020-14525	Low	3.5	0.5%	-	-

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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 2025-03-27.