What is CVE-2026-43788?

CVE-2026-43788 is a medium-severity vulnerability in Apple macOS, classified under Integer Overflow or Wraparound. CVSS score: 6.6/10. Published 2026-09-14.

How severe is CVE-2026-43788?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Integer overflow in Apple macOS

CVE-2026-43788

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27. Processing a maliciously crafted file may lead to a denial-of-service or potentially disclose memory contents.

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H.

Affected products

Apple Macos

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-43788?: CVE-2026-43788 is a medium-severity vulnerability in Apple macOS, classified under Integer Overflow or Wraparound. CVSS score: 6.6/10. Published 2026-09-14.
How severe is CVE-2026-43788?: Medium severity. CVSS v3 base score is 6.6 out of 10.