Security readout for executives and security teams
Plain-English summary
An app may be able to discover which apps a user has installed, exposing private information about interests, activities, or sensitive services. Apple addressed the issue by removing sensitive data in specified operating-system updates. The supplied sources do not describe broader data theft, integrity compromise, or a complete exploitation method.
Executive priority
Treat this as a moderate privacy remediation priority. Schedule prompt fleet-wide updates, emphasizing executive, healthcare, financial, and other sensitive-use devices. Emergency incident response is not supported by the supplied exploitation evidence, but incomplete affected-version ranges warrant careful inventory and compliance verification.
Technical view
CVE-2026-28878 is classified as CWE-200 information exposure with CVSS 3.1 score 6.5. The assigned vector indicates network reachability, low complexity, no privileges, and no user interaction, with low confidentiality and availability impact. However, the public description only identifies installed-app enumeration and does not explain the vulnerable component or availability impact.
Likely exposure
Potential exposure exists across iOS, iPadOS, macOS, tvOS, visionOS, and watchOS devices that have not reached the listed fixed releases. The source bundle provides placeholder affected-version data, so the exact vulnerable version ranges cannot be determined reliably from this evidence.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited evidence establishes active exploitation or public weaponization. The sources state that an app may enumerate installed applications, but do not disclose prerequisites, attack mechanics, or whether platform protections materially constrain abuse.
Researcher notes
Public technical detail is limited. The record names sensitive-data removal and installed-app enumeration but provides no component, boundary conditions, or reproducible behavior. The CVSS vector includes network reachability and low availability impact, which the brief description does not explain. Researchers should avoid inferring additional capabilities without updated vendor evidence.
Mitigation direction
- Update iPhones and iPads to iOS/iPadOS 18.7.7 or 26.4, as applicable.
- Update Macs to Sequoia 15.7.7, Sonoma 14.8.5, or Tahoe 26.4.
- Update Apple TV, Vision Pro, and Apple Watch devices to version 26.4.
- Review Apple security guidance for any later releases or model-specific availability.
- Prioritize devices handling sensitive identities, regulated data, or high-risk applications.
Validation and detection
- Inventory affected Apple device types and their installed operating-system versions.
- Confirm each device is running the applicable fixed version or a later supported release.
- Identify unsupported devices that cannot receive the listed security updates.
- Verify update compliance through enterprise device-management reporting where available.
- Monitor Apple advisories and the CVE record for clarified affected-version ranges.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2026-28878 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
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:L/I:N/A:L3.92.5CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
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/126792CVE reference, apple
- https://support.apple.com/en-us/126793CVE reference, apple
- https://support.apple.com/en-us/126794CVE reference, apple
- https://support.apple.com/en-us/126796CVE reference, apple
- https://support.apple.com/en-us/126797CVE reference, apple
- https://support.apple.com/en-us/126798CVE reference, apple
- https://support.apple.com/en-us/126799CVE reference, apple
- https://support.apple.com/en-us/127116CVE 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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.