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CVE Record

CVE-2026-28870: An information leakage was addressed with additional validation.

An information leakage was addressed with additional validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An app may be able to access sensitive user data.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Apple vulnerability could let an app access sensitive user data on affected devices. Apple says the issue was an information leak fixed with additional validation. The business concern is data exposure from devices that have not yet received the listed security updates.

Executive priority

Treat this as a moderate-priority fleet hygiene issue. It is not supported as actively exploited in the provided sources, but delayed patching leaves sensitive user data exposed to local app-based access.

Technical view

CVE-2026-28870 is a local, low-complexity, low-privilege confidentiality issue. The CVSS vector indicates no user interaction, unchanged scope, high confidentiality impact, and no integrity or availability impact. Apple lists fixes across iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS.

Likely exposure

Exposure is most likely in Apple device fleets that have not updated to iOS/iPadOS 18.7.9, iOS/iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, or watchOS 26.4.

Exploitation context

The source bundle does not show CISA KEV listing, active exploitation, or public exploit evidence. The CVSS vector suggests an attacker would need local app execution with low privileges, but no user interaction.

Researcher notes

Affected version ranges are not detailed beyond product families and fixed releases. Analysis should stay anchored to Apple advisories and CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N until more technical details are published.

Mitigation direction

  • Update affected Apple devices to the fixed versions listed by Apple.
  • Prioritize devices used by executives, developers, and users handling sensitive data.
  • Use MDM policy to enforce minimum fixed OS versions.
  • Check Apple security guidance for any platform-specific update notes.

Validation and detection

  • Inventory Apple devices and compare OS versions against Apple fixed releases.
  • Confirm MDM compliance reports show the fixed versions deployed.
  • Review update deferral policies that may block security releases.
  • Track Apple advisory pages for revisions to affected platforms or guidance.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

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CVE-2026-28870 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2026-28870Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AppleiOS and iPadOS0, 0Listed
ApplemacOS0Listed
AppletvOS0Listed
ApplevisionOS0Listed
ApplewatchOS0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.