Security readout for executives and security teams
Plain-English summary
A flaw in supported Apple operating systems can let an app read beyond intended memory boundaries and unexpectedly terminate the system. Apple corrected the issue through stronger bounds checking. The supplied evidence does not establish data theft, code execution, or active exploitation, despite the critical CVSS rating.
Executive priority
Prioritize prompt deployment across managed Apple fleets because the supplied rating is critical and remediation is available. Treat emergency escalation according to exposure and operational importance; current evidence supports system disruption but does not confirm active attacks or broader compromise.
Technical view
CVE-2026-64762 is a CWE-125 out-of-bounds read affecting iOS, iPadOS, and macOS. Apple states that an app may cause unexpected system termination. The supplied CVSS 3.1 score is 9.8, but its network attack vector and full confidentiality, integrity, and availability impacts are not reconciled with Apple's narrower description.
Likely exposure
Potential exposure includes devices running releases older than iOS or iPadOS 18.7.10, macOS Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6. The bundle provides placeholder affected-version values, so exact vulnerable version ranges cannot be confirmed from this evidence.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited source establishes active exploitation or a public exploit. Apple's description identifies an app-triggered denial-of-service outcome but does not explain the required delivery method or whether additional impacts are practical.
Researcher notes
The evidence contains a material scope inconsistency: CVSS indicates network reachability and high CIA impact, while Apple describes an app causing termination. Exact vulnerable ranges are also absent. Researchers should avoid inferring remote code execution, information disclosure, or exploitation until Apple or CVE records provide supporting detail.
Mitigation direction
- Update iPhones and iPads to iOS or iPadOS 18.7.10 or later.
- Update Sequoia systems to macOS 15.7.8 or later.
- Update Sonoma systems to macOS 14.8.8 or later.
- Update Tahoe systems to macOS 26.6 or later.
- Restrict untrusted applications until affected devices are updated.
Validation and detection
- Inventory iOS, iPadOS, and macOS devices and record their exact operating-system versions.
- Confirm each device meets or exceeds the fixed release for its operating-system branch.
- Verify update deployment through endpoint-management reporting or local software-update status.
- Review unexpected system terminations, while recognizing crashes alone do not prove exploitation.
- Recheck Apple advisories for clarified affected ranges or exploitation information.
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-125: 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-2026-64762 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.