Is CVE-2024-53975 in the CISA KEV catalog?

No. CVE-2024-53975 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-53975?

CVE-2024-53975 has a CVSS v3 base score of 5.4 (MEDIUM).

What is the EPSS score for CVE-2024-53975?

CVE-2024-53975 has an EPSS score of 0.27% (19th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-53975?

Upgrade DeveloperEdition to 133.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2024-53975

MEDIUM

5.4

CVSS v3

NVD

Description

Accessing a non-secure HTTP site that uses a non-existent port may cause the SSL padlock icon in the location URL bar to, misleadingly, appear secure. This vulnerability affects Firefox for iOS < 133.

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:133.0Fixed in:133.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:133.0Fixed in:133.0Mozilla

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

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.27%probability of exploitation in 30 days

19thpercentile

Low risk: more likely to be exploited than 19% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Issue Tracking1

bugzilla.mozilla.org

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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 2025-10-28.