Security readout for executives and security teams
Plain-English summary
CVE-2023-42838 is an Apple macOS sandbox access-control issue. A local app may be able to run code outside its intended sandbox or gain certain elevated privileges. For leaders, the concern is endpoint compromise escalation: a malicious or already-compromised app could obtain broader access than policy intended.
Executive priority
Prioritize remediation in normal high-severity endpoint patch cycles. Escalate for developer workstations, administrator endpoints, and machines handling sensitive data. Available evidence does not justify emergency zero-day handling, but delayed patching preserves escalation paths for local attackers.
Technical view
Apple describes this as an access issue addressed by sandbox improvements. The CVSS vector is local, low complexity, high privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact. Apple lists fixes in macOS Sonoma 14.1, Ventura 13.6.3, and Monterey 12.7.2.
Likely exposure
Exposure is limited to Apple macOS systems below the fixed releases: Sonoma 14.1, Ventura 13.6.3, or Monterey 12.7.2. The bundle does not identify a specific component, app class, or configuration dependency beyond macOS.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked in KEV. CVSS indicates local access with high privileges is required. Treat this as a post-compromise or malicious-app escalation risk, not a remotely reachable entry point based on available evidence.
Researcher notes
Apple’s advisory is sparse: it names sandbox access control, broad macOS impact, and fixed versions, but not the vulnerable subsystem or exploit mechanics. Avoid assuming exploitability beyond the CVSS and Apple impact statement. No public exploitation evidence is present in the supplied bundle.
Mitigation direction
- Update macOS Sonoma systems to 14.1 or later.
- Update macOS Ventura systems to 13.6.3 or later.
- Update macOS Monterey systems to 12.7.2 or later.
- Prioritize managed endpoints that run untrusted or third-party applications.
- Check current Apple guidance for any superseding security updates.
Validation and detection
- Inventory macOS versions across managed and unmanaged endpoints.
- Confirm systems meet or exceed the fixed release for their macOS branch.
- Review MDM compliance reports for lagging or unsupported macOS devices.
- Check endpoint security telemetry for unexplained sandbox or privilege-escalation alerts.
- Document exceptions where systems cannot be updated promptly.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-42838 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
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/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.
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:H/UI:N/S:C/C:H/I:H/A:H1.56Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/HT214038CVE reference
- https://support.apple.com/en-us/HT213984CVE reference
- https://support.apple.com/en-us/HT214037CVE reference
- https://support.apple.com/kb/HT214038CVE reference
- https://support.apple.com/kb/HT214037CVE reference
- https://support.apple.com/kb/HT213984CVE reference
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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.