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Full vulnerability report · 2026
CVE-2026-43799High confidence

A use after free issue was addressed with improved memory management

Apple · iOS and iPadOS

9.8CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

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-2026-49447

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 actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Fix not verified
01

What, why and how

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination.

What

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path 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

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path 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
a network path → Use After Free → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
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-416 ↗

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.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.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-416
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-2872Apple Safari, macOS, iOS und iPadOS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apple Safari, Apple macOS, Apple iOS und Apple iPadOS ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren, Speicherbeschädigungen zu verursachen oder einen Denial-of-Service-Zustand herbeizuführen.

Official advisory
BSI · German · WID-SEC-W-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-W-2026-2537Apple iOS und iPadOS: Mehrere Schwachstellen

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

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1038Multiples vulnérabilités dans les produits Apple

d?id=CVE-2026-43754 Référence CVE CVE-2026-43757 https://www.cve.org/CVERecord?id=CVE-2026-43757 Référence CVE CVE-2026-43769 https://www.cve.org/CVERecord?id=CVE-2026-43769 Référence CVE CVE-2026-43776 https://www.cve.org/CVERecord?id=CVE-2026-43776 Référence CVE CVE-2026-43778 https://www.cve.org/CVERecord?id=CVE-2026-43778 Référence CVE CVE-2026-43794 https://www.cve.org/CVERecord?id=CVE-2026-43794 Référence CVE CVE-2026-43795 https://www.cve.org/CVERecord?id=CVE-2026-43795 Référence CVE CVE-2026-43796 https://www.cve.org/CVERecord?id=CVE-2026-43796 Référence CVE CVE-2026-43797 https://www.cve.org/CVERecord?id=CVE-2026-43797 Référence CVE CVE-2026-43799 https://www.cve.org/CVERecord?id=CVE-2026-43799 Référence CVE CVE-2026-43800 https://www.cve.org/CVERecord?id=CVE-2026-43800 Référence CVE CVE-2026-43801 https://www.cve.org/CVERecord?id=CVE-2026-43801 Référence CVE CVE-2026-43802 https://www.cve.org/CVERecord?id=CVE-2026-43802 Référence CVE CVE-2026-43803 https://www.cve.org/CVERecord?id=CVE-2026-43803 Référence CVE CVE-2026-43807 https://www.cve.org/CVERecord?id=CVE-2026-43807 Référence CVE CVE-2026-43809 https://www.cve.org/CVERecord?id=CVE-2026-43809 Référence CVE CVE-2026-43810 https://www.cve.org/CVERecord?id=CVE-2026-43810 Référence CVE CVE-2026-43811 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2026-43778 Référence CVE CVE-2026-43779 https://www.cve.org/CVERecord?id=CVE-2026-43779 Référence CVE CVE-2026-43780 https://www.cve.org/CVERecord?id=CVE-2026-43780 Référence CVE CVE-2026-43781 https://www.cve.org/CVERecord?id=CVE-2026-43781 Référence CVE CVE-2026-43782 https://www.cve.org/CVERecord?id=CVE-2026-43782 Référence CVE CVE-2026-43792 https://www.cve.org/CVERecord?id=CVE-2026-43792 Référence CVE CVE-2026-43793 https://www.cve.org/CVERecord?id=CVE-2026-43793 Référence CVE CVE-2026-43796 https://www.cve.org/CVERecord?id=CVE-2026-43796 Référence CVE CVE-2026-43797 https://www.cve.org/CVERecord?id=CVE-2026-43797 Référence CVE CVE-2026-43799 https://www.cve.org/CVERecord?id=CVE-2026-43799 Référence CVE CVE-2026-43800 https://www.cve.org/CVERecord?id=CVE-2026-43800 Référence CVE CVE-2026-43801 https://www.cve.org/CVERecord?id=CVE-2026-43801 Référence CVE CVE-2026-43802 https://www.cve.org/CVERecord?id=CVE-2026-43802 Référence CVE CVE-2026-43803 https://www.cve.org/CVERecord?id=CVE-2026-43803 Référence CVE CVE-2026-43804 https://www.cve.org/CVERecord?id=CVE-2026-43804 Référence CVE CVE-2026-43805 https://www.cve.org/CVERecord?id=CVE-2026-43805 Référence CVE CVE-2026-43806 https://www.cve.org/CVERecord?id=CVE-2026-43806 Référence CVE CVE-2026-43807 https://www.cve.org/CVERecord?id=

Official advisory
CSIRT Italia · Italian · aggiornamenti-di-sicurezza-apple-17Aggiornamenti di sicurezza Apple

a nuova finestra - - CVE-2026-43822 : apre una nuova finestra - - CVE-2026-64768 : apre una nuova finestra - - CVE-2026-64725 : apre una nuova finestra - - CVE-2026-64769 : apre una nuova finestra - - CVE-2026-64726 : apre una nuova finestra - - CVE-2026-43705 : apre una nuova finestra - - CVE-2026-43661 : apre una nuova finestra - - CVE-2026-4424 : apre una nuova finestra - - CVE-2026-64762 : apre una nuova finestra - - CVE-2026-64763 : apre una nuova finestra - - CVE-2026-64764 : apre una nuova finestra - - CVE-2026-64719 : apre una nuova finestra - - CVE-2026-43757 : apre una nuova finestra - - CVE-2026-43711 : apre una nuova finestra - - CVE-2026-43799 : apre una nuova finestra - - CVE-2026-64757 : apre una nuova finestra - - CVE-2026-64716 : apre una nuova finestra - - CVE-2026-43673 : apre una nuova finestra - - CVE-2026-43794 : apre una nuova finestra - - CVE-2026-28973 : apre una nuova finestra - - CVE-2026-43809 : apre una nuova finestra - - CVE-2026-43807 : apre una nuova finestra - - CVE-2026-43725 : apre una nuova finestra - - CVE-2026-43769 : apre una nuova finestra - - CVE-2026-43802 : apre una nuova finestra - - CVE-2026-43724 : apre una nuova finestra - - CVE-2026-64700 : apre una nuova finestra - - CVE-2026-43723 : apre una nuova finestra - - CVE-2026-64746 : apre una nuova fi

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

A use after free vulnerability causing unexpected system termination was addressed through improved memory management in iOS 26.6, iPadOS 26.6, multiple macOS versions, tvOS 26.6, visionOS 26.6, and watchOS 26.6.

Official advisory
NCSC-NL · Dutch · NCSC-2026-0266Kwetsbaarheden verholpen in Apple iOS en iPadOS

A use after free vulnerability causing unexpected system termination was addressed through improved memory management in iOS 26.6, iPadOS 26.6, multiple macOS versions, tvOS 26.6, visionOS 26.6, and watchOS 26.6.

Official advisory
NCSC-NL · Dutch · NCSC-2026-0319Kwetsbaarheden verholpen in Apple iOS en iPadOS

A use-after-free vulnerability causing unexpected system termination was fixed in multiple Apple operating systems including iOS 18.7.10, iPadOS 26.6, macOS 15.7.8, tvOS 14.8.8, visionOS 26.6, and watchOS 26.6 through improved memory management.

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
< 18.7.10; < 26.6; < 14.8.8; < 15.7.8
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. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 27 Jul 2026 · Last source change 17 Aug 2026, 21:31 UTC · CWE-416 · Use After Free

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-2026-49447
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 →
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 26.6; < 14.8.8; < 15.7.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    < 18.7.10; < 26.6; < 14.8.8; < 15.7.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-49447↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2026-43799 · cve.blacktree.nl