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iOS EUVDEUVD-2026-15165

| CVE-2026-28886 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-03-25 apple GHSA-3gqw-qcrw-37vv
5.9
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Null pointer safety, defensive checks
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

The risk profile for this vulnerability presents a mixed signal analysis. While specific CVSS metrics are not publicly available, the attack vector requires privileged network positioning (suggesting network-based but not remotely accessible from the internet without positioning), and the technical impact is limited to denial-of-service rather than data compromise or code execution. The broad scope of affected products (six major Apple operating systems) and the availability of vendor patches across all platforms indicate this is a real but contained threat. The absence of CVSS scoring, EPSS data, and any evidence of public proof-of-concept or KEV listing suggests this is a lower-priority remediation compared to critical remote code execution vulnerabilities, though the ecosystem-wide nature demands systematic patching. Organizations should prioritize patching high-value or network-critical Apple devices but may deprioritize less critical endpoints.

Exploit ScenarioDerived

An attacker positioned on the same network as target Apple devices (such as on a compromised Wi-Fi network or within an internal corporate network) could craft malformed network traffic or packets designed to trigger the null pointer dereference in the affected code path. Upon processing this malicious input, the vulnerable Apple device would crash or become unresponsive, disrupting service availability. While this does not allow code execution or data theft, it could be weaponized to disable critical infrastructure or cause operational disruption in environments heavily dependent on Apple device availability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 25, 2026

Denial-of-service attacks against multiple Apple platforms (iOS, iPadOS, macOS, tvOS, visionOS, and watchOS) result from improper null pointer handling that allows attackers in privileged network positions to crash affected systems. An attacker exploiting this CWE-476 vulnerability can render devices unavailable without user interaction. No patch is currently available, requiring users to apply mitigations until updates are released.

Earlier versions of this analysis (1)
v1 Mar 25, 2026 - 01:00 CVSS 5.9

A null pointer dereference vulnerability affecting Apple's operating systems across multiple platforms (iOS, iPadOS, macOS, tvOS, visionOS, and watchOS) has been addressed through improved input validation. An attacker in a privileged network position can exploit this vulnerability to cause a denial-of-service condition, preventing affected devices from functioning normally. Apple has released patches across all affected platforms, with no public evidence of active exploitation or public proof-of-concept code at this time.

RemediationAI

Immediately upgrade affected Apple devices to patched versions: iOS and iPadOS to 18.7.7 or later (or 26.4 for newer versions), macOS Sequoia to 15.7.5, macOS Sonoma to 14.8.5, macOS Tahoe to 26.4, and tvOS, visionOS, and watchOS to 26.4 or later. Refer to the detailed security advisories at https://support.apple.com/en-us/126792 through https://support.apple.com/en-us/126799 for platform-specific instructions. For organizations unable to patch immediately, implement network segmentation to restrict untrusted network access to affected devices and monitor for unexpected service interruptions that may indicate exploitation attempts. Prioritize patching devices in critical network roles or those exposed to untrusted networks.

Affected VersionsENISA

macOS 0 <26.4
visionOS 0 <26.4
iOS and iPadOS 0 <18.7.7
macOS 0 <15.7.5
tvOS 0 <26.4
iOS and iPadOS 0 <26.4
watchOS 0 <26.4
macOS 0 <14.8.5

Affected Packages

euvd ios_and_ipados fix: 18.7.7, 26.4
euvd macos fix: 14.8.5, 15.7.5, 26.4
euvd tvos fix: 26.4
euvd visionos fix: 26.4
euvd watchos fix: 26.4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 5 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is a null pointer dereference (CWE category: improper null pointer handling), which occurs when code attempts to access memory through a null pointer without proper validation. The affected products span Apple's entire ecosystem: iOS and iPadOS (cpe:2.3:a:apple:ios_and_ipados), macOS across multiple versions including Sequoia (15.7.5), Sonoma (14.8.5), and Tahoe (26.4) (cpe:2.3:a:apple:macos), tvOS (cpe:2.3:a:apple:tvos), visionOS (cpe:2.3:a:apple:visionos), and watchOS (cpe:2.3:a:apple:watchos). The root cause involves insufficient input validation before dereferencing a pointer, allowing a network-positioned attacker to trigger the null pointer condition and crash the affected component.

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Severity by source

NVD PRIMARY 5.9 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

2
Patch available
Apr 16, 2026 - 05:29 EUVD
26.4,18.7.7,15.7.5
CVE Published
Mar 25, 2026 - 00:32 nvd
MEDIUM 5.9

DescriptionCVE.org

A null pointer dereference was addressed with improved input validation. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A user in a privileged network position may be able to cause a denial-of-service.

Executive ViewAI

Why It Matters

Organizations using A null pointer dereference should be aware of moderate risk from CVE-2026-28886, a null pointer dereference vulnerability rated CVSS 5.9. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.

Threat Intelligence Overview

EPSS Score
0.0%
Top 93% exploitable
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Defer
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Low
Technical Impact
Partial

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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