# CVE-2025-43504: A buffer overflow was addressed with improved bounds checking. This issue is fixed in Xcode 26.1. A user in a…

Source: https://junglewise.ai/threats/cve-2025-43504-a-buffer-overflow-was-addressed-with-improved-bounds-checking  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-04  
License: CC BY 4.0 with a link back

CVE-2025-43504 · Severity: medium · CVSS 4.9 · Published 2025-11-04

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.

Technologies: [Apple Xcode](https://junglewise.ai/threats/technologies/xcode). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2025-43504 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-43504 being exploited in the wild.

**How severe is CVE-2025-43504?** Medium severity, with a CVSS score of 4.9, published 4 November 2025.

**Which products and versions are affected?** Apple Xcode. The advisory does not name versions.

**Is there a fix for CVE-2025-43504?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-43504?** Check whether you run Apple Xcode. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Apple Xcode

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