EUVD-2026-49557
Improper Input Validation (CWE-20)
GHSA-wq9g-gwgp-vjq3
9.8
CVSS 3.1 · Vendor: apple
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Severity by source
Vendor (apple)
PRIMARY
9.8
CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (apple) · only source for this CVE.
CVSS VectorVendor: apple
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
4
Analysis Generated
Jul 28, 2026 - 15:35 vuln.today
Patch available
Jul 27, 2026 - 21:17 EUVD
CVE Published
Jul 27, 2026 - 20:13 cve.org
UNKNOWN (no severity yet)
CVE Published
Jul 27, 2026 - 20:13 cve.org
CRITICAL 9.8
DescriptionCVE.org
An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
AnalysisAI
Improper validation of environment variables in macOS enables a local application to trigger unexpected system termination, causing a denial-of-service condition. The vulnerability affects macOS versions prior to Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. No active exploitation or public exploit has been identified, and the EPSS score is very low at 0.16%.
Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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