Security readout for executives and security teams
Plain-English summary
A memory-safety flaw in multiple Apple operating systems could let an app crash the system or modify kernel memory. Kernel-memory modification can undermine device security and confidentiality. Apple addressed the issue through improved memory management in version 26.6 releases.
Executive priority
Patch on an accelerated schedule. The potential for kernel-memory modification makes compromise consequences substantial, although active exploitation is not established. Require prompt fleet-wide version reporting and separately address devices that cannot receive the fixed release.
Technical view
CVE-2026-64751 is a CWE-416 use-after-free vulnerability affecting iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The supplied CVSS 3.1 score is 9.8. Apple states that an app may cause unexpected system termination or write kernel memory. The affected component and precise vulnerable version ranges are not disclosed in the bundle.
Likely exposure
Potential exposure includes Apple devices running releases earlier than iOS/iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, or watchOS 26.6. The supplied affected-version entries are incomplete, so confirm applicability and supported hardware through Apple’s advisories.
Exploitation context
The supplied record is not in CISA KEV, and the source bundle provides no evidence of active exploitation or a public exploit. The stated impact is nevertheless severe because a malicious app may write kernel memory or terminate the system. Treat exploitation status as unconfirmed, not impossible.
Researcher notes
The record identifies use-after-free behavior and kernel-memory-write potential but does not identify the affected subsystem, triggering conditions, vulnerable version boundaries, or exploit chain. The CVSS vector reports network reachability without privileges or user interaction, while Apple describes an app-based outcome; this discrepancy warrants careful vendor-record review.
Mitigation direction
- Update eligible Apple devices to the applicable 26.6 operating-system release.
- Prioritize devices handling sensitive data or permitting installation of untrusted applications.
- Check Apple’s linked advisories for model eligibility and any additional vendor guidance.
- Escalate devices unable to receive 26.6 for risk review and replacement planning.
Validation and detection
- Inventory affected Apple platforms and record their installed operating-system versions.
- Verify managed devices report the applicable 26.6 release after deployment.
- Confirm update compliance across mobile, desktop, wearable, television, and spatial-computing fleets.
- Review security telemetry for unexplained system terminations or kernel-related alerts, without treating them as proof of exploitation.
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-416: 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-2026-64751 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/128066CVE reference, apple
- https://support.apple.com/en-us/128067CVE reference, apple
- https://support.apple.com/en-us/128068CVE reference, apple
- https://support.apple.com/en-us/128069CVE reference, apple
- https://support.apple.com/en-us/128070CVE 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.