How severe is CVE-2024-3840?

CVE-2024-3840 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 none, integrity high, and availability none.

Is CVE-2024-3840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-3840?

CVE-2024-3840 primarily affects Google Chrome. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-3840?

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-2024-3840 have an EU (EUVD) identifier?

Yes. CVE-2024-3840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32409.

When was CVE-2024-3840 published?

CVE-2024-3840 was published on 2024-04-17 and last updated on 2026-06-17.

CVE-2024-3840

CVE-2024-3840 is a high-severity vulnerability in Google Chrome 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-285.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32409
Weakness: CWE-285
Affected product: Google Chrome
Published: 2024-04-17
Last modified: 2026-06-17

Description

Insufficient policy enforcement in Site Isolation in Google Chrome prior to 124.0.6367.60 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)

Frequently asked questions

What is CVE-2024-3840?: Insufficient policy enforcement in Site Isolation in Google Chrome prior to 124.0.6367.60 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)
How severe is CVE-2024-3840?: CVE-2024-3840 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 none, integrity high, and availability none.
Is CVE-2024-3840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-3840?: CVE-2024-3840 primarily affects Google Chrome. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-3840?: 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-2024-3840 have an EU (EUVD) identifier?: Yes. CVE-2024-3840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32409.
When was CVE-2024-3840 published?: CVE-2024-3840 was published on 2024-04-17 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

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