EUVD-2026-77966
GHSA-h46f-wrjh-pfj6
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Remote unauthenticated delivery via network (AV:N/PR:N) but victim must open crafted content (UI:R); impact limited to availability (A:H, C:N/I:N).
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
6DescriptionCVE.org
A denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27. A remote attacker may be able to cause a denial-of-service.
AnalysisAI
A remote denial-of-service flaw in Apple iOS and iPadOS (all versions before 27) stems from insufficient input validation in a code path that processes remotely supplied content, allowing an attacker to crash or hang the affected feature. Exploitation requires the victim to interact with the malicious input (CVSS UI:R) and yields only availability impact - confidentiality and integrity are unaffected. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker needs network reachability to deliver content (AV:N) and no authentication (PR:N), but the victim must actively interact with the malicious input (UI:R) - opening a link, message, attachment, or file that reaches the vulnerable input-validation path in iOS/iPadOS. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, 6.5 Medium) describes an unauthenticated network-reachable attack that is technically straightforward (AC:L) but gated by required user interaction (UI:R), with impact confined to availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to iOS 27 or iPadOS 27, which Apple released with improved input validation that resolves this denial-of-service condition (vendor-released patch confirmed via the Apple advisory at https://support.apple.com/en-us/149034 and the 'Available from vendor' patch status). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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