Is CVE-2025-43505 in the CISA KEV catalog?

No. CVE-2025-43505 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-43505?

CVE-2025-43505 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2025-43505?

CVE-2025-43505 has an EPSS score of 0.26% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-43505?

Upgrade xcode to 26.1 or later.

CVE & CISA-KEV Catalog

CVE-2025-43505

HIGH

8.8

CVSS v3

NVD

Description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Xcode 26.1. Processing a maliciously crafted file may lead to heap corruption.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

xcodeNVD

Affected:< 26.1Fixed in:26.1CVE-2025-43505derived from NVD

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

0.26%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Vendor Advisory1

support.apple.com

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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 2025-11-04.