Is CVE-2024-6607 in the CISA KEV catalog?

No. CVE-2024-6607 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-6607?

CVE-2024-6607 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2024-6607?

CVE-2024-6607 has an EPSS score of 0.56% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-6607?

Upgrade firefox on debian unstable to 128.0-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2024-6607

HIGH

8.8

CVSS v3

NVD

Description

It was possible to prevent a user from exiting pointerlock when pressing escape and to overlay customValidity notifications from a `<select>` element over certain permission prompts. This could be used to confuse a user into giving a site unintended permissions. This vulnerability affects Firefox < 128 and Thunderbird < 128.

CWE-763

How to fix

Remediation Available

firefoxDebian

Fixed in:128.0-1CVE-2024-6607

firefoxUbuntu

Fixed in:128.0+build2-0ubuntu0.20.04.1USN-6890-1

DeveloperEditionWindows application

Affected:128.0Fixed in:128.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:128.0Fixed in:128.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:128.0Fixed in:128.0Mozilla

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Exploit1

bugzilla.mozilla.org

Vendor Advisory2

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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 2025-07-16.