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iOS and iPadOS CVE-2026-43667

| EUVDEUVD-2026-60487 MEDIUM
Reachable Assertion (CWE-617)
2026-08-17 apple GHSA-xxww-wjfc-r8m2
6.5
CVSS 3.1 · Vendor: apple
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Severity by source

Vendor (apple) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI
5.3 MEDIUM

AC:H reflects the privileged network positioning prerequisite; all other metrics align with the vendor-provided vector and DoS-only impact.

3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
Analysis Generated
Aug 18, 2026 - 14:30 vuln.today
CVSS changed
Aug 18, 2026 - 14:22 NVD
6.5 (MEDIUM)
Patch available
Aug 17, 2026 - 22:03 EUVD
CVE Published
Aug 17, 2026 - 21:29 cve.org
MEDIUM 6.5
CVE Published
Aug 17, 2026 - 21:29 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

A reachable assertion was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10. An attacker in a privileged network position may be able to cause a denial-of-service.

AnalysisAI

Denial-of-service in Apple iOS and iPadOS (all versions before 18.7.10) can be triggered by an attacker occupying a privileged network position - such as a network middleman - who sends malformed input that trips a reachable assertion, crashing the affected process or device. The CVSS vector confirms no attacker privileges are required and the attack is network-reachable, though user interaction and a specific network vantage point are prerequisites. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
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Delivery
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Exploit
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Install
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C2
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Execute
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to occupy a privileged network position - meaning on-path between the victim device and a network endpoint (e.g., rogue access point operator, ARP-cache poisoner on LAN, or ISP/carrier-level adversary). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 3.1 base score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) reflects a network-reachable, unauthenticated DoS with no confidentiality or integrity impact. … 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 The primary remediation is to update all affected Apple devices to iOS 18.7.10 or iPadOS 18.7.10, which contains the vendor-released patch addressing the assertion with improved input validation. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-43667 vulnerability details – vuln.today

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