How severe is CVE-2025-43240?

CVE-2025-43240 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-43240 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43240?

CVE-2025-43240 primarily affects Apple Safari. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-43240?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-43240 have an EU (EUVD) identifier?

Yes. CVE-2025-43240 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23066.

When was CVE-2025-43240 published?

CVE-2025-43240 was published on 2025-07-30 and last updated on 2026-06-17.

CVE-2025-43240

CVE-2025-43240 is a medium-severity vulnerability in Apple Safari with a CVSS 3.x base score of 6.2. 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-703.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23066
Weakness: CWE-703
Affected product: Apple Safari
Published: 2025-07-30
Last modified: 2026-06-17

Description

A logic issue was addressed with improved checks. This issue is fixed in Safari 18.6, macOS Sequoia 15.6. A download's origin may be incorrectly associated.

Frequently asked questions

What is CVE-2025-43240?: A logic issue was addressed with improved checks. This issue is fixed in Safari 18.6, macOS Sequoia 15.6. A download's origin may be incorrectly associated.
How severe is CVE-2025-43240?: CVE-2025-43240 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-43240 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43240?: CVE-2025-43240 primarily affects Apple Safari. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-43240?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43240 have an EU (EUVD) identifier?: Yes. CVE-2025-43240 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23066.
When was CVE-2025-43240 published?: CVE-2025-43240 was published on 2025-07-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

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