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CVE Record

CVE-2026-28826: A logic issue was addressed with improved restrictions.

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. A malicious app may be able to break out of its sandbox.

MediumCVSS 4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This macOS issue could let a malicious app escape its sandbox, reducing the protection that normally limits app access. Apple fixed it with improved restrictions in macOS Sequoia 15.7.5, Sonoma 14.8.5, and Tahoe 26.4.

Executive priority

Treat this as a routine but real endpoint hardening issue. It is not sourced as exploited, but sandbox escape bugs weaken containment and should be patched in the normal macOS update cycle.

Technical view

Apple describes CVE-2026-28826 as a logic issue in macOS sandbox restrictions. The CVSS vector is local, low complexity, no privileges, no user interaction, unchanged scope, and low integrity impact only. Public sources do not identify the affected component or detailed trigger.

Likely exposure

Exposure is likely limited to macOS systems running versions older than Sequoia 15.7.5, Sonoma 14.8.5, or Tahoe 26.4 where a malicious app can run locally.

Exploitation context

The source bundle does not report active exploitation, and KEV status is false. The described abuse case is local: a malicious app may break out of its sandbox.

Researcher notes

Public detail is sparse: no CWE, component name, proof of concept, indicators, or exploit conditions beyond malicious app sandbox escape. Validation should focus on patch state and policy controls rather than exploit reproduction.

Mitigation direction

  • Update macOS to Sequoia 15.7.5, Sonoma 14.8.5, Tahoe 26.4, or later.
  • Prioritize managed Macs that run third-party or untrusted applications.
  • Restrict execution of untrusted apps until affected systems are updated.
  • Check Apple guidance for exact version applicability before rollout.

Validation and detection

  • Inventory macOS versions across managed endpoints.
  • Confirm endpoints are on the fixed Apple release for their macOS branch.
  • Review MDM or EDR posture for untrusted application execution controls.
  • Track Apple advisories for any later clarification or revised fixes.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2026-28826 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Official CVE source material

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.

1CVSS vectors
3Timeline events
1ADP providers
4Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N2.51.4CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

4Medium
CVSS 3.1 vector shape for CVE-2026-28826Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ApplemacOS0, 0, 0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.