An integer underflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker with control of a network file server may be able to cause unexpected system termination.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apple | macOS | affected |
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Project Subscriptions
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Advisories
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Fixes
Solution
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Workaround
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References
History
Tue, 20 Oct 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An integer underflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker with control of a network file server may be able to cause unexpected system termination. | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: apple
Published:
Updated: 2026-10-20T00:50:43.774Z
Reserved: 2026-09-08T16:43:41.870Z
Link: CVE-2026-86871
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-20T01:17:25.253
Modified: 2026-10-20T01:17:25.253
Link: CVE-2026-86871
Redhat
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OpenCVE Enrichment
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Weaknesses
No weakness.