Security readout for executives and security teams
Plain-English summary
A malicious app on an affected Apple device may exploit flawed directory-path handling to escape its sandbox. This could expose or alter sensitive data or disrupt the device beyond the app's intended permissions. Apple addressed the issue with stronger path validation in specified iOS, iPadOS, macOS, and tvOS releases.
Executive priority
Prioritize an urgent update campaign across applicable Apple fleets, especially devices permitted to install third-party applications. The potential sandbox escape and high impact justify rapid remediation, although the supplied evidence does not show active exploitation. Track update coverage and exceptions until affected assets are confirmed fixed.
Technical view
CVE-2026-64740 is a CWE-22 path-validation weakness with a supplied CVSS 3.1 score of 9.3. A locally executing malicious app may escape its sandbox. The vector indicates low complexity, no required privileges or user interaction, changed security scope, and potentially high confidentiality, integrity, and availability impact.
Likely exposure
Potential exposure includes supported iOS, iPadOS, macOS, and tvOS devices not running the listed fixed releases. The bundle does not provide reliable complete affected-version boundaries; its affected-version entries contain placeholder values. Organizations should compare each device and release line with Apple's linked advisories.
Exploitation context
The source bundle marks KEV false and provides no cited evidence of exploitation in the wild. Exploitation is local: a malicious app must run on the device. The available evidence does not establish a remote attack path, public exploit availability, or observed campaigns.
Researcher notes
Apple describes a directory-path parsing issue corrected through improved path validation. The supplied classification is CWE-22. Precise vulnerable version ranges, the affected component, root cause details, exploit availability, and telemetry are not included. Treat placeholder version entries as insufficient for exposure determination and rely on the linked Apple advisories.
Mitigation direction
- Update iOS and iPadOS to 18.7.10 or 26.6, following the device's supported release line.
- Update macOS Sequoia to 15.7.8, Sonoma to 14.8.8, or Tahoe to 26.6.
- Update affected Apple TV devices to tvOS 26.6.
- Check Apple's linked advisories for deployment-specific guidance and later revisions.
Validation and detection
- Inventory iOS, iPadOS, macOS, and tvOS versions across managed assets.
- Confirm each device meets the fixed version for its operating-system release line.
- Verify updates completed successfully through endpoint or mobile-device-management reporting.
- Investigate unclassified versions against Apple's advisories; the bundle lacks complete affected-version boundaries.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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-2026-64740 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
- 9.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/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:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H2.56CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.3CriticalVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/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/128066CVE reference, apple
- https://support.apple.com/en-us/128067CVE reference, apple
- https://support.apple.com/en-us/128069CVE 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.