PatchTheCVECVE-2026-43688: A memory corruption issue was addressed with improved input validation
CVE-2026-43688 is a high-severity flaw (CVSS 7.8) affecting ipados, iphone os, macos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27. Processing a maliciously crafted file may lead to unexpected app termination.
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 95%) |
| CISA exploited list | No |
| Weakness | CWE-1021 |
| Published | 2026-09-14 |
| Last modified | 2026-09-17 |
Last updated 2026-09-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-43688?
ipados: upgrade to 27.0; iphone os: upgrade to 27.0; macos: upgrade to 27.0. Exact commands for each OS are on this page.
Is CVE-2026-43688 being exploited?
CVE-2026-43688 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-43688 affect?
CVE-2026-43688 affects ipados, iphone os, macos. Severity is high (CVSS 7.8). A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27. Processing a maliciously crafted file may lead to unexpected app termination.
How urgent is CVE-2026-43688?
Priority 29/100. High severity
Software pages
iOS vulnerabilities · macOS vulnerabilities · iPadOS vulnerabilities
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