Vulnerability record · CVE-2025-43400 · published 29 September 2025

CVE-2025-43400: Apple ipados out-of-bounds write vulnerability

Apple · Ipados

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.1 and iPadOS 18.7.1, iOS 26.0.1 and iPadOS 26.0.1, macOS Sequoia 15.7.1, macOS Sonoma 14.8.1, macOS Tahoe 26.0.1, tvOS 26.1, visionOS 26.0.1, watchOS 26.1. Processing a maliciously crafted font may lead to unexpected app termination or corrupt process memory.

6.3 CVSS 3.1 Medium EPSS 6.4% · top 6.5% CWE-787 · Out-of-bounds write

6.3CVSS 3.1 base score

6.4%EPSS exploitation probability, 30 days

NoNot in CISA KEV

4Affected product versions listed by NVD

11References

17 Jun 2026Last modified by NVD

Description

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Ipados Apple

Iphone Os Apple

Macos Apple

Visionos Apple

References

Link	Tags
https://support.apple.com/en-us/125326
https://support.apple.com/en-us/125327
https://support.apple.com/en-us/125328
https://support.apple.com/en-us/125329
https://support.apple.com/en-us/125330
https://support.apple.com/en-us/125338
https://support.apple.com/en-us/125637
https://support.apple.com/en-us/125639
http://seclists.org/fulldisclosure/2025/Sep/73
http://seclists.org/fulldisclosure/2025/Sep/76
http://seclists.org/fulldisclosure/2025/Sep/78

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2025-43300Apple iOS, iPadOS and macOS out-of-bounds write via malicious imageAn out-of-bounds write in Apple iOS, iPadOS and macOS is triggered when processing a malicious image file, causing memory corruption. Apple states th…KEVEPSS 22%analysed21 Aug 2025 10.0CVE-2025-24201Apple WebKit out-of-bounds write allows sandbox escapeCVE-2025-24201 is an out-of-bounds write in Apple's WebKit that was addressed with improved checks. Maliciously crafted web content may break out of …KEVEPSS 3.8%analysed11 Mar 2025 10.0CVE-2025-24085Apple iOS, iPadOS, macOS, tvOS, visionOS, watchOS Use-After-Free Privilege EscalationA use-after-free flaw in Apple's operating systems was fixed through improved memory management in iOS 18.3, iPadOS 18.3 and 17.7.6, macOS Sequoia 15…KEVEPSS 18%analysed27 Jan 2025 9.8CVE-2026-65400Apple macOS Screen Sharing authentication bypassAn improper authentication flaw in Apple macOS Screen Sharing allows a network attacker to authenticate without valid credentials. Apple fixed it via…KEVEPSS 1.2%analysed6 Aug 2026 9.8CVE-2025-31200Apple OS media parsing memory corruption allows code executionA memory corruption flaw in Apple's audio stream processing was fixed with improved bounds checking across iOS, iPadOS, macOS, tvOS, visionOS and wat…KEVEPSS 19%analysed16 Apr 2025 9.8CVE-2025-31201Apple OS Pointer Authentication bypass via arbitrary read/writeApple removed vulnerable code that allowed an attacker holding arbitrary read and write capability to bypass Pointer Authentication across iOS, iPadO…KEVEPSS 14%analysed16 Apr 2025 9.8CVE-2022-22587Apple iOS, iPadOS and macOS kernel memory corruption via out-of-bounds writeAn out-of-bounds write (CWE-787) in Apple iOS, iPadOS and macOS is caused by insufficient input validation and can corrupt memory. Apple states it is…KEVEPSS 12%analysed18 Mar 2022 9.8CVE-2021-1870Apple WebKit logic flaw allows remote code executionA logic issue in Apple's WebKit was addressed with improved restrictions, affecting macOS Big Sur, Catalina, Mojave, iOS and iPadOS, plus WebKitGTK a…KEVEPSS 7.7%analysed2 Apr 2021

Source: NIST National Vulnerability Database (record CVE-2025-43400), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.