Security readout for executives and security teams
Plain-English summary
A malicious app may escape Apple’s normal sandbox restrictions and gain access beyond its intended boundaries. This could expose sensitive information or enable broader system changes. Apple reports fixes for specified iOS, iPadOS, and macOS releases, but the supplied sources provide little technical detail about prerequisites or impact after escape.
Executive priority
Treat patching as urgent for managed Apple fleets because sandbox escape can undermine a major security boundary. Prioritize systems exposed to untrusted applications and verify deployment centrally. Avoid claiming confirmed compromise or active exploitation: neither is supported by the supplied sources.
Technical view
CVE-2026-64738 is a CWE-284 permissions weakness addressed through additional restrictions. Apple states that a malicious application may escape its sandbox. Fixes are listed in iOS/iPadOS 18.7.10, macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. Root cause and exploitation mechanics are not disclosed in the bundle.
Likely exposure
Potentially exposed assets are Apple devices running releases earlier than the listed fixed versions within the named operating-system branches, particularly where untrusted applications can be installed or executed. The bundle’s affected-version entries contain placeholder values, so exact vulnerable version ranges and device eligibility cannot be established from this evidence alone.
Exploitation context
The supplied record is not identified as CISA KEV, and no cited source in the bundle states that exploitation is active. Exploitation requires a malicious app according to Apple’s description. The supplied CVSS vector indicates network reachability and no privileges or interaction, which conflicts with that description; attack prerequisites therefore remain uncertain.
Researcher notes
Public detail is limited to a permissions failure, sandbox escape impact, and fixed releases. No vulnerable component, root-cause analysis, proof of concept, indicators, or complete version ranges are provided. The 9.8 CVSS vector appears inconsistent with the malicious-app prerequisite, so validate scoring and attack conditions against authoritative updates before modeling risk.
Mitigation direction
- Update eligible iPhones and iPads to iOS or iPadOS 18.7.10 or later.
- Update Macs to Sequoia 15.7.8, Sonoma 14.8.8, Tahoe 26.6, or later.
- Restrict installation and execution of untrusted applications until updates are deployed.
- Check Apple guidance for unsupported devices or operating-system branches not named in the bundle.
Validation and detection
- Inventory Apple devices and record their exact operating-system versions.
- Confirm each device meets or exceeds the fixed release for its operating-system branch.
- Identify devices permitting untrusted, unmanaged, or sideloaded applications and prioritize them.
- Review endpoint telemetry for suspicious applications or abnormal activity; public indicators are not supplied.
Public sources used
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-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.
Open ATT&CK lookupCVE-2026-64738 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/128067CVE reference, apple
- https://support.apple.com/en-us/128071CVE reference, apple
- https://support.apple.com/en-us/128072CVE reference, apple
- https://support.apple.com/en-us/148287CVE reference, apple
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 Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.