Security readout for executives and security teams
Plain-English summary
CVE-2026-20645 is an Apple iOS/iPadOS lock-screen privacy issue. Someone with physical access to a locked device may be able to view sensitive user information. Apple says the issue was fixed with improved state management in iOS/iPadOS 18.7.5 and 26.3.
Executive priority
Treat as a moderate-priority privacy exposure. It is not remotely exploitable based on current sources, but it can matter in lost-device, insider, travel, or executive-risk scenarios. Updating managed Apple devices should be scheduled promptly through normal mobile patch management.
Technical view
Apple describes an inconsistent user interface issue, mapped to CWE-1021, where lock-state handling could expose sensitive user information. The CVSS 3.1 score is 4.6, driven by physical access requirement and high confidentiality impact. Fixed versions are iOS 18.7.5, iPadOS 18.7.5, iOS 26.3, and iPadOS 26.3.
Likely exposure
Exposure is limited to Apple iPhones and iPads running affected iOS or iPadOS versions before the Apple-fixed releases. Risk is highest for lost, stolen, shared, or unattended devices where an attacker can physically handle a locked device.
Exploitation context
The CVE requires physical access to a locked device and does not require user interaction or privileges. The source bundle does not indicate active exploitation, and the CVE is not listed as KEV. No public exploit details are provided in the cited sources.
Researcher notes
Available public detail is sparse. Apple identifies the root issue only as inconsistent UI state management and provides fixed versions. Avoid assuming broader products, exploitability, or attack paths beyond physical access to a locked iOS/iPadOS device and possible sensitive information exposure.
Mitigation direction
- Update eligible devices to iOS 18.7.5, iPadOS 18.7.5, iOS 26.3, or iPadOS 26.3.
- Prioritize devices used by executives, privileged staff, travelers, and high-risk personnel.
- Review Apple’s linked security advisories for device-specific applicability.
- If devices cannot be updated, reduce physical exposure and strengthen lost-device procedures.
Validation and detection
- Inventory iOS and iPadOS versions across managed devices.
- Confirm devices report iOS/iPadOS 18.7.5 or 26.3, as applicable.
- Check MDM compliance policies for minimum supported OS versions.
- Review helpdesk and security logs for lost or unattended device reports.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-1021: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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.
Open ATT&CK lookupCVE-2026-20645 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N0.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.6MediumVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/126346CVE reference
- https://support.apple.com/en-us/126347CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Rendered UI Layers or Frames
Improper Restriction of Rendered UI Layers or Frames represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.