CVE-2026-20657

MEDIUM 6.5

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination.

Vendor	apple
Product	ios and ipados
Ecosystems	iOS macOS
Industries	Technology
Published	Mar 25, 2026
Last Updated	May 11, 2026

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Affected Versions

Apple / iOS and iPadOS

0 < 18.7.7 0 < 26.4

Apple / macOS

0 < 14.8.5 0 < 15.7.5 0 < 26.4

Apple / visionOS

0 < 26.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

support.apple.com: https://support.apple.com/en-us/126792 support.apple.com: https://support.apple.com/en-us/126793 support.apple.com: https://support.apple.com/en-us/126794 support.apple.com: https://support.apple.com/en-us/126795 support.apple.com: https://support.apple.com/en-us/126796 support.apple.com: https://support.apple.com/en-us/126799