How severe is CVE-2025-43377?

CVE-2025-43377 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-43377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43377?

CVE-2025-43377 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43377?

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

Does CVE-2025-43377 have an EU (EUVD) identifier?

Yes. CVE-2025-43377 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37712.

When was CVE-2025-43377 published?

CVE-2025-43377 was published on 2025-11-04 and last updated on 2026-06-17.

CVE-2025-43377

CVE-2025-43377 is a medium-severity vulnerability in Apple Macos with a CVSS 3.x base score of 5.5. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37712
Weakness: CWE-125
Affected product: Apple Macos
Published: 2025-11-04
Last modified: 2026-06-17

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, macOS Sequoia 15.7.2, macOS Tahoe 26.1. An app may be able to cause a denial-of-service.

Frequently asked questions

What is CVE-2025-43377?: An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, macOS Sequoia 15.7.2, macOS Tahoe 26.1. An app may be able to cause a denial-of-service.
How severe is CVE-2025-43377?: CVE-2025-43377 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-43377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43377?: CVE-2025-43377 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43377 have an EU (EUVD) identifier?: Yes. CVE-2025-43377 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37712.
When was CVE-2025-43377 published?: CVE-2025-43377 was published on 2025-11-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

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Other CWE-125 (Out-of-bounds Read) vulnerabilities

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