How severe is CVE-2025-43504?

CVE-2025-43504 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-43504 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43504?

CVE-2025-43504 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43504?

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

Does CVE-2025-43504 have an EU (EUVD) identifier?

Yes. CVE-2025-43504 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37637.

When was CVE-2025-43504 published?

CVE-2025-43504 was published on 2025-11-04 and last updated on 2026-06-17.

CVE-2025-43504

CVE-2025-43504 is a medium-severity vulnerability in Apple Xcode with a CVSS 3.x base score of 4.9. 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37637
Weakness: CWE-119
Affected product: Apple Xcode
Published: 2025-11-04
Last modified: 2026-06-17

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in Xcode 26.1. A user in a privileged network position may be able to cause a denial-of-service.

Frequently asked questions

What is CVE-2025-43504?: A buffer overflow was addressed with improved bounds checking. This issue is fixed in Xcode 26.1. A user in a privileged network position may be able to cause a denial-of-service.
How severe is CVE-2025-43504?: CVE-2025-43504 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-43504 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43504?: CVE-2025-43504 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43504?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43504 have an EU (EUVD) identifier?: Yes. CVE-2025-43504 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37637.
When was CVE-2025-43504 published?: CVE-2025-43504 was published on 2025-11-04 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/125641

Affected products (1)

cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*

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