Security readout for executives and security teams
Plain-English summary
Apple fixed a macOS memory-safety flaw that could let an app crash the operating system. The supplied record rates it critical, but the public description does not substantiate confidentiality or integrity impact. Prioritize updating managed Macs, especially systems running untrusted or externally sourced applications.
Executive priority
Treat patching as urgent because the supplied severity is critical and exploitation could disrupt endpoint availability. However, do not characterize this as confirmed remote compromise: the description supports an app-caused crash, while active exploitation and broader security impact are unconfirmed.
Technical view
CVE-2026-64762 is a CWE-125 out-of-bounds read addressed through improved bounds checking. Apple states an app may cause unexpected system termination. Fixed releases are macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The supplied affected-version entries are unusable, and the CVSS 9.8 impact claims exceed the described crash outcome.
Likely exposure
Potential exposure includes Macs below the named fixed releases, but the bundle provides no reliable affected-version boundaries or vulnerable component. Inventory Sequoia, Sonoma, and Tahoe endpoints and compare their installed versions with Apple's fixed releases. Exposure on other macOS branches cannot be determined from these sources.
Exploitation context
The bundle marks this CVE as absent from KEV and provides no evidence of active exploitation, public exploit code, or observed attacks. It identifies an app-triggered system termination scenario, but does not explain delivery conditions or whether exploitation requires a malicious application already running on the Mac.
Researcher notes
Important evidence gaps remain: no vulnerable component, precise affected range, attack prerequisites, or technical advisory details are supplied. The CVSS vector claims network reachability and high confidentiality, integrity, and availability impact, but Apple's description only names app-triggered termination. Validate these discrepancies against the linked Apple advisories before expanding impact claims.
Mitigation direction
- Update Sequoia systems to 15.7.8 or later.
- Update Sonoma systems to 14.8.8 or later.
- Update Tahoe systems to 26.6 or later.
- Check Apple guidance for unsupported macOS branches or additional mitigations.
- Restrict untrusted applications until affected endpoints are updated.
Validation and detection
- Inventory each managed Mac's macOS branch and installed version.
- Confirm Sequoia endpoints report 15.7.8 or later.
- Confirm Sonoma endpoints report 14.8.8 or later.
- Confirm Tahoe endpoints report 26.6 or later.
- Review endpoint telemetry for unexplained system terminations involving applications.
- Verify update compliance through endpoint-management reporting.
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
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.