PatchTheCVECVE-2026-84489: A buffer overflow was addressed with improved bounds checking
CVE-2026-84489 is a medium-severity flaw (CVSS 5.5) affecting ipados, iphone os, macos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. An app may be able to cause a denial of service.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 94%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2026-09-14 |
| Last modified | 2026-09-16 |
Last updated 2026-09-16 · 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-2026-84489?
ipados: upgrade to 18.7.10; iphone os: upgrade to 18.7.10; macos: upgrade to 14.8.8, 15.7.8. Exact commands for each OS are on this page.
Is CVE-2026-84489 being exploited?
CVE-2026-84489 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-2026-84489 affect?
CVE-2026-84489 affects ipados, iphone os, macos. Severity is medium (CVSS 5.5). A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. An app may be able to cause a denia
How urgent is CVE-2026-84489?
Priority 21/100. No elevated risk signals yet.
Software pages
iOS vulnerabilities · macOS vulnerabilities · iPadOS vulnerabilities
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