BlackTreeCVE Intelligence
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Full vulnerability report · 2026
CVE-2026-43653High confidence

An attacker on the local network may be able to cause a denial-of-service

Apple · iOS and iPadOS

6.2MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-29299

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

What

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Uncontrolled Resource Consumption → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-400

CWE-400: Uncontrolled Resource Consumption. The product does not properly control the allocation and maintenance of a limited resource.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
UnauthenticatedCWE-400
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-2543Apple macOS (Tahoe, Sonoma und Sequoia): Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apple macOS Tahoe, Sonoma und Sequoia ausnutzen, um seine Privilegien zu erhöhen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2026-1459Apple iOS und iPadOS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apple iOS und Apple iPadOS ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um beliebigen Programmcode auszuführen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2026-1463Apple macOS Sonoma, macOS Sequoia und macOS Tahoe: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apple macOS Sonoma, macOS Sequoia und macOS Tahoe ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um beliebigen Programmcode auszuführen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0938Multiples vulnérabilités dans les produits Apple

ecord?id=CVE-2026-28983 Référence CVE CVE-2026-3783 https://www.cve.org/CVERecord?id=CVE-2026-3783 Référence CVE CVE-2026-3784 https://www.cve.org/CVERecord?id=CVE-2026-3784 Référence CVE CVE-2026-39868 https://www.cve.org/CVERecord?id=CVE-2026-39868 Référence CVE CVE-2026-39872 https://www.cve.org/CVERecord?id=CVE-2026-39872 Référence CVE CVE-2026-39873 https://www.cve.org/CVERecord?id=CVE-2026-39873 Référence CVE CVE-2026-39874 https://www.cve.org/CVERecord?id=CVE-2026-39874 Référence CVE CVE-2026-39875 https://www.cve.org/CVERecord?id=CVE-2026-39875 Référence CVE CVE-2026-39877 https://www.cve.org/CVERecord?id=CVE-2026-39877 Référence CVE CVE-2026-43653 https://www.cve.org/CVERecord?id=CVE-2026-43653 Référence CVE CVE-2026-43661 https://www.cve.org/CVERecord?id=CVE-2026-43661 Référence CVE CVE-2026-43663 https://www.cve.org/CVERecord?id=CVE-2026-43663 Référence CVE CVE-2026-43665 https://www.cve.org/CVERecord?id=CVE-2026-43665 Référence CVE CVE-2026-43672 https://www.cve.org/CVERecord?id=CVE-2026-43672 Référence CVE CVE-2026-43673 https://www.cve.org/CVERecord?id=CVE-2026-43673 Référence CVE CVE-2026-43676 https://www.cve.org/CVERecord?id=CVE-2026-43676 Référence CVE CVE-2026-43681 https://www.cve.org/CVERecord?id=CVE-2026-43681 Référence CVE CVE-2026-43682 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0563Multiples vulnérabilités dans les produits Apple

d?id=CVE-2026-28992 Référence CVE CVE-2026-28993 https://www.cve.org/CVERecord?id=CVE-2026-28993 Référence CVE CVE-2026-28994 https://www.cve.org/CVERecord?id=CVE-2026-28994 Référence CVE CVE-2026-28995 https://www.cve.org/CVERecord?id=CVE-2026-28995 Référence CVE CVE-2026-28996 https://www.cve.org/CVERecord?id=CVE-2026-28996 Référence CVE CVE-2026-39869 https://www.cve.org/CVERecord?id=CVE-2026-39869 Référence CVE CVE-2026-39870 https://www.cve.org/CVERecord?id=CVE-2026-39870 Référence CVE CVE-2026-39871 https://www.cve.org/CVERecord?id=CVE-2026-39871 Référence CVE CVE-2026-43652 https://www.cve.org/CVERecord?id=CVE-2026-43652 Référence CVE CVE-2026-43653 https://www.cve.org/CVERecord?id=CVE-2026-43653 Référence CVE CVE-2026-43654 https://www.cve.org/CVERecord?id=CVE-2026-43654 Référence CVE CVE-2026-43655 https://www.cve.org/CVERecord?id=CVE-2026-43655 Référence CVE CVE-2026-43656 https://www.cve.org/CVERecord?id=CVE-2026-43656 Référence CVE CVE-2026-43658 https://www.cve.org/CVERecord?id=CVE-2026-43658 Référence CVE CVE-2026-43659 https://www.cve.org/CVERecord?id=CVE-2026-43659 Référence CVE CVE-2026-43660 https://www.cve.org/CVERecord?id=CVE-2026-43660 Référence CVE CVE-2026-43661 https://www.cve.org/CVERecord?id=CVE-2026-43661 Référence CVE CVE-2026-43666 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-015607アップルのiPadOS等の複数製品におけるリソースの枯渇に関する脆弱性

この問題はメモリ処理の改善によって対処されました。この問題はiOS 18.7.9およびiPadOS 18.7.9、iOS 26.5およびiPadOS 26.5、macOS Sonoma 14.8.7、macOS Tahoe 26.5、tvOS 26.5で修正されています。ローカルネットワーク上の攻撃者がサービス拒否(DoS)攻撃を引き起こす可能性があります。

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0139Kwetsbaarheden verholpen in Apple MacOS

A denial-of-service vulnerability exploitable by a local network attacker was fixed through improved memory handling in multiple Apple operating systems including iOS 18.7.9, iPadOS 18.7.9, and macOS Sonoma 14.8.7.

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0138Kwetsbaarheden verholpen in Apple iOS en iPadOS

A denial-of-service vulnerability exploitable by a local network attacker was fixed through improved memory handling in multiple Apple operating systems including iOS 18.7.9, iPadOS 18.7.9, and macOS Sonoma 14.8.7.

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0267Kwetsbaarheden verholpen in Apple MacOS

A denial-of-service vulnerability caused by improper memory handling was fixed in multiple Apple operating systems including iOS 18.7.9, iPadOS 18.7.9, and macOS Sequoia 15.7.8, exploitable by an attacker on the local network.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • iOS and iPadOS: < 18.7.9, < 26.5
  • macOS: < 14.8.7, < 15.7.8, < 26.5
  • tvOS: < 26.5
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 11 May 2026 · Last source change 27 Jul 2026, 20:15 UTC · CWE-400 · Uncontrolled Resource Consumption

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-29299
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-43653 · cve.blacktree.nl