EUVD-2026-77878
GHSA-wr4h-fvqw-7ghm
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attacker must already control the trusted network directory server (PR:L) and the flaw is triggered on the client locally (AV:L), with full root-level C/I/A impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
6DescriptionCVE.org
A path traversal issue was addressed with improved path 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 directory server may be able to execute arbitrary code with root privileges.
AnalysisAI
A path traversal flaw (CWE-22) in Apple macOS is addressed by improved path validation and allows an attacker who controls a network directory server to execute arbitrary code with root privileges on a connecting client. Affected are macOS Sequoia before 15.8, macOS Tahoe before 26.7, and macOS Golden Gate before 27. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the attacker control - or fully impersonate - the network directory server that the target Mac is bound to, and that the Mac actually query that server for the affected path data (which happens on normal directory-bound operation, without user prompt, per UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals here are mixed and should temper the 7.8 score. … 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 | Vendor-released patch: upgrade to macOS Sequoia 15.8, macOS Tahoe 26.7, or macOS Golden Gate 27 as applicable to your hardware and release train (Apple advisories https://support.apple.com/en-us/149035, https://support.apple.com/en-us/149042, https://support.apple.com/en-us/149043). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-22 – Path Traversal
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External POC / Exploit Code
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