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CVE Record

CVE-2026-20642: An input validation issue was addressed.

An input validation issue was addressed. This issue is fixed in iOS 26.3 and iPadOS 26.3. A person with physical access to an iOS device may be able to access photos from the lock screen.

LowCVSS 2.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2026-20642 is an Apple iOS and iPadOS lock-screen privacy issue. Someone holding an affected device could access photos without unlocking it. Apple says the input validation issue is fixed in iOS 26.3 and iPadOS 26.3. Business impact is limited but relevant for executives, travelers, regulated staff, and shared-device environments.

Executive priority

Treat as a routine privacy patch with targeted urgency. It is not a remote enterprise compromise issue, but lost, stolen, shared, or inspected devices could expose photos if unpatched.

Technical view

Apple describes this as an input validation issue affecting iOS and iPadOS, mapped to CWE-284. The CVSS 3.1 score is 2.4 with physical access required, low confidentiality impact, and no integrity or availability impact. The CVE record identifies the fix as iOS 26.3 and iPadOS 26.3.

Likely exposure

Exposure is mainly devices not yet updated to iOS 26.3 or iPadOS 26.3. Risk requires physical access to the device, making broad remote compromise unlikely from the available evidence.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not listed as KEV. The scenario requires possession of the device and may expose photos from the lock screen.

Researcher notes

Evidence is limited to Apple and CVE records. The affected version range is not detailed beyond the fixed releases. Avoid assuming exploitability beyond physical-access lock-screen photo access described by Apple.

Mitigation direction

  • Update eligible iPhones and iPads to iOS 26.3 or iPadOS 26.3.
  • Use MDM compliance policies to require the fixed OS versions.
  • Check Apple’s advisory for any device-specific update guidance.
  • Prioritize users handling sensitive photos or regulated data.

Validation and detection

  • Inventory iOS and iPadOS versions across managed devices.
  • Confirm devices report iOS 26.3 or iPadOS 26.3 or later.
  • Identify unmanaged or shared devices with sensitive photo exposure risk.
  • Review MDM compliance and update failure reports.
Prepared
Confidence
high
Sources
3

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-284: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2026-20642 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
Low
CVSS
2.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/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
2Source 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
2.4CVSS 3.1LowCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N0.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

2.4Low
CVSS 3.1 vector shape for CVE-2026-20642Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/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 iPadOS0Listed
Weakness

CWE details

CWE-284

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

CWE-284 · source CWE mapping

Improper Access Control

Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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