Security readout for executives and security teams
Plain-English summary
A memory-handling flaw across multiple Apple operating systems could let a remote attacker crash an application or corrupt heap memory. Apple corrected the problem through stronger bounds checking. Because exploitation requires no privileges or user interaction according to the supplied CVSS vector, unpatched devices warrant urgent attention.
Executive priority
Treat this as an urgent patching priority because the flaw is remotely reachable and carries a critical CVSS rating across common Apple platforms. Prioritize broad device inventory and update compliance. There is no supplied evidence of active exploitation, but incomplete component and affected-range details increase uncertainty.
Technical view
CVE-2026-64770 is a CWE-787 out-of-bounds write rated CVSS 9.8. The supplied vector indicates network reachability, low complexity, no privileges, and no user interaction. Documented consequences are unexpected application termination or heap corruption; the sources do not identify the affected component or confirm code execution.
Likely exposure
Potential exposure includes Apple devices running releases older than the listed fixed versions. However, the bundle provides no reliable vulnerable-version boundaries or affected component details, so exposure cannot be determined from version family alone. Inventory and compare every managed device against Apple's relevant advisory.
Exploitation context
The supplied record does not report active exploitation, and the CVE is not marked as included in KEV. The network-accessible, low-complexity CVSS assessment raises theoretical exploitability, but available evidence only confirms possible application termination or heap corruption. No public exploit evidence is provided.
Researcher notes
The record identifies an out-of-bounds write fixed through improved bounds checking but omits the vulnerable component, attack protocol, and precise affected-version ranges. Heap corruption may enable impacts beyond crashing, but the supplied evidence does not establish code execution. Avoid inferring a specific attack surface until Apple publishes additional detail.
Mitigation direction
- Update iPhones and iPads to iOS or iPadOS 18.7.10 or 26.6, as applicable.
- Update Macs to Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6, as applicable.
- Update Apple TV devices to tvOS 26.6.
- Update Apple Vision Pro devices to visionOS 26.6.
- Consult the applicable Apple advisory for device-specific availability and deployment guidance.
Validation and detection
- Inventory all managed iOS, iPadOS, macOS, tvOS, and visionOS devices.
- Compare installed releases with the fixed versions listed by Apple.
- Confirm updates completed successfully through endpoint or device-management reporting.
- Review applicable Apple advisories for product-specific scope details.
- Track devices unable to update as remediation exceptions requiring documented risk treatment.
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-787: 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-2026-64770 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/128069CVE reference, apple
- https://support.apple.com/en-us/128070CVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.