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Full vulnerability report · 2026
CVE-2026-28971High confidence

The issue was addressed with improved UI handling

Apple · Safari

4.3MediumCVSS 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-2026-29272

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 UI handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5. A malicious iframe may use another website’s download settings.

What

The issue was addressed with improved UI handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5. A malicious iframe may use another website’s download settings.

Why

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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 UI handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5. A malicious iframe may use another website’s download settings.

Why

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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 → Improper Restriction of Rendered UI Layers or Frames → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
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-1021 ↗

CWE-1021: Improper Restriction of Rendered UI Layers or Frames. The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

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:R/S:U/C:L/I:N/A:N

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.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited 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
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-1021
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-1543Apple Safari: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apple Safari ausnutzen, um erweiterte Rechte zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen, einen Denial-of-Service-Zustand zu verursachen oder andere, nicht spezifizierte Angriffe durchzuführen.

Official advisory
BSI · German · WID-SEC-W-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
BSI · German · WID-SEC-W-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
CERT-FR · French · CERTFR-2026-AVI-0590Multiples vulnérabilités dans Apple Safari

d?id=CVE-2026-28917 Référence CVE CVE-2026-28942 https://www.cve.org/CVERecord?id=CVE-2026-28942 Référence CVE CVE-2026-28944 https://www.cve.org/CVERecord?id=CVE-2026-28944 Référence CVE CVE-2026-28946 https://www.cve.org/CVERecord?id=CVE-2026-28946 Référence CVE CVE-2026-28947 https://www.cve.org/CVERecord?id=CVE-2026-28947 Référence CVE CVE-2026-28953 https://www.cve.org/CVERecord?id=CVE-2026-28953 Référence CVE CVE-2026-28955 https://www.cve.org/CVERecord?id=CVE-2026-28955 Référence CVE CVE-2026-28958 https://www.cve.org/CVERecord?id=CVE-2026-28958 Référence CVE CVE-2026-28962 https://www.cve.org/CVERecord?id=CVE-2026-28962 Référence CVE CVE-2026-28971 https://www.cve.org/CVERecord?id=CVE-2026-28971 Référence CVE CVE-2026-43658 https://www.cve.org/CVERecord?id=CVE-2026-43658 Référence CVE CVE-2026-43660 https://www.cve.org/CVERecord?id=CVE-2026-43660 Gestion détaillée du document le 15 mai 2026 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

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

d?id=CVE-2026-28957 Référence CVE CVE-2026-28958 https://www.cve.org/CVERecord?id=CVE-2026-28958 Référence CVE CVE-2026-28959 https://www.cve.org/CVERecord?id=CVE-2026-28959 Référence CVE CVE-2026-28961 https://www.cve.org/CVERecord?id=CVE-2026-28961 Référence CVE CVE-2026-28962 https://www.cve.org/CVERecord?id=CVE-2026-28962 Référence CVE CVE-2026-28963 https://www.cve.org/CVERecord?id=CVE-2026-28963 Référence CVE CVE-2026-28964 https://www.cve.org/CVERecord?id=CVE-2026-28964 Référence CVE CVE-2026-28965 https://www.cve.org/CVERecord?id=CVE-2026-28965 Référence CVE CVE-2026-28969 https://www.cve.org/CVERecord?id=CVE-2026-28969 Référence CVE CVE-2026-28971 https://www.cve.org/CVERecord?id=CVE-2026-28971 Référence CVE CVE-2026-28972 https://www.cve.org/CVERecord?id=CVE-2026-28972 Référence CVE CVE-2026-28974 https://www.cve.org/CVERecord?id=CVE-2026-28974 Référence CVE CVE-2026-28976 https://www.cve.org/CVERecord?id=CVE-2026-28976 Référence CVE CVE-2026-28977 https://www.cve.org/CVERecord?id=CVE-2026-28977 Référence CVE CVE-2026-28978 https://www.cve.org/CVERecord?id=CVE-2026-28978 Référence CVE CVE-2026-28983 https://www.cve.org/CVERecord?id=CVE-2026-28983 Référence CVE CVE-2026-28985 https://www.cve.org/CVERecord?id=CVE-2026-28985 Référence CVE CVE-2026-28986 https://www.cve.org/CVERecord?id=

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

A malicious iframe exploiting download settings was addressed by improved UI handling and fixed in iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, and visionOS 26.5.

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

A malicious iframe exploiting download settings was addressed by improved UI handling and fixed in iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, and visionOS 26.5.

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

Evidence and provenance

Published 11 May 2026 · Last source change 13 May 2026, 19:58 UTC · CWE-1021 · Improper Restriction of Rendered UI Layers or Frames

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-2026-29272
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
CVE published
ENISA EUVD · EUVD-2026-29272↗CVE authority or vendor reference↗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-2026-28971 · cve.blacktree.nl