VulnerabilityModified
CVE-2026-20657
A buffer overflow issue was addressed with improved memory handling.
MEDIUM 6.5EPSS 0.54%
Does this matter?
Lower severity and a low EPSS score (0.54%). Track it; it rarely justifies an emergency change on its own.
Description
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
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.54% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-125, CWE-787
- Affected
- apple/ipados · apple/iphone os · apple/macos
- Source
- product-security@apple.com
References
- https://support.apple.com/en-us/126792
- https://support.apple.com/en-us/126793Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126794
- https://support.apple.com/en-us/126795Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126796Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126799
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.