CVE-2026-20657

CVSS 6.5 MEDIUMEPSS 0.5%CWE-119 CWE-125 CWE-787

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

25 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

Apple · iOS and iPadOS Apple · macOS Apple · visionOS

References

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