How severe is CVE-2024-10458?

CVE-2024-10458 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-10458 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-10458?

CVE-2024-10458 primarily affects Mozilla Firefox. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-10458?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-10458 have an EU (EUVD) identifier?

Yes. CVE-2024-10458 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-33132.

When was CVE-2024-10458 published?

CVE-2024-10458 was published on 2024-10-29 and last updated on 2026-06-17.

CVE-2024-10458

CVE-2024-10458 is a high-severity vulnerability in Mozilla Firefox with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-281.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-33132
Weakness: CWE-281
Affected product: Mozilla Firefox
Published: 2024-10-29
Last modified: 2026-06-17

Description

A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object` elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

Frequently asked questions

What is CVE-2024-10458?: A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object` elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.
How severe is CVE-2024-10458?: CVE-2024-10458 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-10458 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-10458?: CVE-2024-10458 primarily affects Mozilla Firefox. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-10458?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-10458 have an EU (EUVD) identifier?: Yes. CVE-2024-10458 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-33132.
When was CVE-2024-10458 published?: CVE-2024-10458 was published on 2024-10-29 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

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