PT-2026-39758 · Apple · Macos Sonoma+5

Wang Yu · Published 2026-05-11 · Updated 2026-05-18 · CVE-2026-28819

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions iOS versions prior to 18.7.9 iPadOS versions prior to 18.7.9 macOS Sequoia versions prior to 15.7.7 macOS Sonoma versions prior to 14.8.7 macOS Tahoe versions prior to 26.5

Description An out-of-bounds write issue, which occurs when data is written outside the boundaries of a pre-allocated fixed-length block of memory, could allow an application to execute arbitrary code with kernel privileges.

Recommendations Update iOS to version 18.7.9. Update iPadOS to version 18.7.9. Update macOS Sequoia to version 15.7.7. Update macOS Sonoma to version 14.8.7. Update macOS Tahoe to version 26.5.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-28819

Affected Products

Apple Macos

Ios

Ipados

Macos Sequoia

Macos Sonoma

Macos Tahoe

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2026-28819 · Security Note
• https://support.apple.com/en-us/127116 · Vendor Advisory
• https://support.apple.com/en-us/127117 · Vendor Advisory
• https://support.apple.com/en-us/127115 · Vendor Advisory
• https://support.apple.com/en-us/127111 · Vendor Advisory
• https://twitter.com/aviatrixtrc/status/2054244582041223213 · Twitter Post
• https://twitter.com/patchdayalert/status/2056413506082045992 · Twitter Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-28819 · Note
• https://reddit.com/r/SecOpsDaily/comments/1tb13ps/the_apple_macos_security_update_review · Reddit Post
• https://reddit.com/r/Automox/comments/1tbczuc/may_2026_patch_tuesday_breakdown_two_preauth_98 · Reddit Post
• https://reddit.com/r/KibernetinisSaugumas/comments/1tbs9a0/dienos_kibernetinio_saugumo_radar_20260513 · Reddit Post