Security readout for executives and security teams
Plain-English summary
CVE-2026-28825 is a macOS vulnerability where an app may modify protected parts of the file system. Apple says the issue was an out-of-bounds write fixed with improved bounds checking. For businesses, priority is patching managed Macs to the fixed macOS releases because file-system protection bypass can undermine endpoint integrity.
Executive priority
Treat as a high-priority endpoint patching item for macOS fleets. It is not confirmed as exploited in the provided sources, but the possible modification of protected file-system areas makes delayed patching a meaningful integrity and availability risk.
Technical view
Apple describes this as a CWE-787 out-of-bounds write in macOS. The stated impact is that an app may be able to modify protected parts of the file system. The CVSS 3.1 score is 7.1 high, with user interaction required and no privileges required in the provided vector. Fixed releases are macOS Sequoia 15.7.5, Sonoma 14.8.5, and Tahoe 26.4.
Likely exposure
Exposure is limited to macOS systems running versions earlier than the Apple fixed releases listed for their supported branches. The source bundle does not identify iOS, iPadOS, Windows, Linux, or specific hardware models as affected.
Exploitation context
The source bundle does not show CISA KEV listing or cite active exploitation. Apple’s impact statement requires an app, meaning exposure is most relevant where users can run untrusted or malicious applications. No public exploit status is established from the provided sources.
Researcher notes
Public details in the bundle are limited. Apple attributes the fix to improved bounds checking and identifies protected file-system modification as the impact. The included technical blog should be reviewed for deeper root-cause context, but avoid assuming affected components beyond Apple’s advisory language.
Mitigation direction
- Update macOS Sequoia systems to 15.7.5 or later.
- Update macOS Sonoma systems to 14.8.5 or later.
- Update macOS Tahoe systems to 26.4 or later.
- Restrict execution of untrusted apps until patching is complete.
- Monitor Apple advisories for any revised affected-version or mitigation guidance.
Validation and detection
- Inventory macOS endpoints and group by major release branch.
- Confirm installed versions meet Apple’s fixed-release thresholds.
- Check MDM or endpoint-management compliance reports for patch failures.
- Review application-control posture for unmanaged or untrusted app execution.
- Track CVE-2026-28825 against Apple advisory references in vulnerability management tooling.
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-2026-28825 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H2.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/126794CVE reference
- https://support.apple.com/en-us/126795CVE reference
- https://support.apple.com/en-us/126796CVE reference
- https://blog.calif.io/p/mad-bugs-an-apple-kernel-bug-broughtCVE reference · technical-description
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.