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CVE Record

CVE-2026-20678: An authorization issue was addressed with improved state management.

An authorization issue was addressed with improved state management. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3. 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

CVE-2026-20678 is an Apple iOS and iPadOS authorization flaw. Apple says an app may be able to access sensitive user data. The issue is fixed in iOS/iPadOS 18.7.5 and iOS/iPadOS 26.3. This is a privacy risk, especially for managed devices handling regulated or confidential data.

Executive priority

Treat as a normal-priority Apple fleet update with privacy implications. Escalate priority for devices used with sensitive business, customer, health, financial, or executive data. There is no cited evidence of active exploitation in the provided sources.

Technical view

The CVE describes an authorization issue addressed through improved state management, categorized as CWE-200 information exposure. CVSS 3.1 is 5.5: local attack vector, low complexity, low privileges, no user interaction, and high confidentiality impact. The published description does not identify the specific data type exposed.

Likely exposure

Exposure is likely limited to Apple iPhone and iPad devices running iOS/iPadOS versions before the fixed releases. The provided sources name fixed versions but do not provide a complete vulnerable version matrix.

Exploitation context

No source in the bundle reports active exploitation, and the CVE is not listed as KEV. Exploitation requires a local app with privileges, according to the CVSS vector. The main concern is unauthorized access to sensitive user data on unpatched devices.

Researcher notes

The public description is sparse. It confirms an authorization/state-management issue with potential sensitive data access by an app, but not the affected component, data class, or exact vulnerable ranges. Avoid assuming exploitability beyond the CVSS vector and Apple advisory language.

Mitigation direction

  • Update iPhones and iPads to iOS/iPadOS 18.7.5 or iOS/iPadOS 26.3, as applicable.
  • Use MDM compliance policies to require supported fixed versions.
  • Review Apple security guidance for any deployment-specific notes.
  • Prioritize devices used by executives, privileged staff, and regulated-data users.

Validation and detection

  • Inventory managed iOS and iPadOS device versions.
  • Confirm devices report iOS/iPadOS 18.7.5 or 26.3 where applicable.
  • Check MDM compliance and update failure reports.
  • Review Apple support pages for any revised affected-version details.
Prepared
Confidence
medium
Sources
4

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.

cwe · medium confidence lookup

CWE-200: Information exposure and cloud metadata lookup

Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2026-20678 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
0Timeline events
0ADP providers
3Source links

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:N1.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2026-20678Attack 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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AppleiOS and iPadOS0, 0Listed
Weakness

CWE details

CWE-200

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

CWE-200 · source CWE mapping

Exposure of Sensitive Information to an Unauthorized Actor

Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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