PatchTheCVECVE-2026-84494: An out-of-bounds write issue was addressed with improved bounds checking
CVE-2026-84494 is a high-severity flaw (CVSS n/a) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, visionOS 27.2. An app may be able to cause unexpected system termination or write kernel memory.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | n/a (High) |
| EPSS exploit chance | 0.2% (top 86%) |
| CISA exploited list | No |
| Published | 2026-10-26 |
| Last modified | 2026-10-27 |
Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
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-2026-84494?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-84494 being exploited?
CVE-2026-84494 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-2026-84494 affect?
CVE-2026-84494 affects affected software. Severity is high (CVSS n/a). An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, visionOS 27.2. An app may be able to cause unexpected system termination or write kernel memo
How urgent is CVE-2026-84494?
Priority 3/100. No elevated risk signals yet.
Software pages
iOS vulnerabilities · macOS vulnerabilities · iPadOS vulnerabilities