CVE-2026-20657 is a memory handling vulnerability affecting Apple iOS, iPadOS, and macOS, which could lead to an unexpected application termination upon parsing a maliciously crafted file. Rated Medium with a CVSS score of 6.5, this vulnerability requires user interaction to open a malicious file but has low attack complexity and primarily impacts system availability. There is currently no evidence of active exploitation, public exploit code availability (e.g., Metasploit, ExploitDB), or significant community discussion surrounding this vulnerability. It is not listed in CISA's Known Exploited Vulnerabilities catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 18.7.7CPE matchmatch criteria | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | ||
< 18.7.7CPE matchmatch criteria | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | ||
>= 14.0, < 14.8.5CPE matchmatch criteria | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | ||
>= 15.0, < 15.7.5CPE matchmatch criteria | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
About the security content of iOS 18.7.7 and iPadOS 18.7.7 - Apple Support
About the security content of macOS Sequoia 15.7.5 - Apple Support
About the security content of macOS Sonoma 14.8.5 - Apple Support
About the security content of macOS Tahoe 26.4 - Apple Support
About the security content of iOS 26.4 and iPadOS 26.4 - Apple Support