High severity7.5NVD Advisory· Published Mar 25, 2026· Updated Jun 17, 2026

CVE-2026-20639

Description

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Apple Inc./macOS2 versions
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*range: >=14.0,<14.8.5
- (no CPE)range: 0
Apple Inc./macOS Sequoiallm-fuzzy
Range: 15.7.5
Apple Inc./macOS Sonomallm-fuzzy
Range: 14.8.5
Apple Inc./macOS Tahoellm-fuzzy
Range: 26.3

Patches

Vulnerability mechanics

References

support.apple.com/en-us/126348nvdRelease NotesVendor Advisory
support.apple.com/en-us/126795nvdRelease NotesVendor Advisory
support.apple.com/en-us/126796nvdRelease NotesVendor Advisory

News mentions

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