PatchTheCVECVE-2026-28872: A resource exhaustion issue was addressed with improved input validation
CVE-2026-28872 is a high-severity flaw (CVSS 7.5) affecting ipados, iphone os. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.4 and iPadOS 26.4. A remote attacker may be able to cause a denial-of-service.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 60%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2026-05-11 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · 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-2026-28872?
ipados: upgrade to 18.7.9, 26.4; iphone os: upgrade to 18.7.9, 26.4. Exact commands for each OS are on this page.
Is CVE-2026-28872 being exploited?
CVE-2026-28872 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-2026-28872 affect?
CVE-2026-28872 affects ipados, iphone os. Severity is high (CVSS 7.5). A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.4 and iPadOS 26.4. A remote attacker may be able to cause a denial-of-service.
How urgent is CVE-2026-28872?
Priority 41/100. High severity; Remotely exploitable, no login, no user action
Software pages
iOS vulnerabilities · iPadOS vulnerabilities
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