EUVD-2026-88445
GHSA-3cf3-h799-fjvq
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Malicious file can be delivered remotely (AV:N) with no auth (PR:N) but needs the user to process it (UI:R); an OOB write yielding code execution gives full C/I/A impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
9DescriptionCVE.org
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.
Articles & Coverage 2
AnalysisAI
Out-of-bounds write in Apple's iOS, iPadOS, and macOS file-parsing code lets remote attackers achieve arbitrary code execution when a victim opens a maliciously crafted file, scoring CVSS 8.8 (AV:N/AC:L/PR:N/UI:R, CWE-787). Apple fixed the flaw in iOS 26.7.1, iPadOS 26.7.1, macOS Sequoia 15.8.1, and macOS Tahoe 26.7.1, and states it is aware of a report that the issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the victim to process/open a maliciously crafted file on a vulnerable device (UI:R), so exploitation depends on user interaction and successful delivery of the malicious file to the target. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine top-priority vulnerability despite conflicting signals. … 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 | Apply the vendor-released patches: iOS 26.7.1 and iPadOS 26.7.1 for iPhone and iPad, macOS Sequoia 15.8.1, and macOS Tahoe 26.7.1 for Macs, as documented in Apple advisories https://support.apple.com/en-us/149226, https://support.apple.com/en-us/149228, and https://support.apple.com/en-us/149229. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Apple endpoints and confirm version levels, then prioritize patching for executives, privileged administrators, finance, legal, and any personnel with elevated data access or public visibility, since open-source reporting indicates targeting of specific individuals; distribute an interim advisory instructing staff to avoid opening unexpected or unsolicited file attachments from unknown senders until devices are updated. …
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External POC / Exploit Code
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