Security readout for executives and security teams
Plain-English summary
This vulnerability lets an attacker with a privileged position on the network disrupt affected Apple devices. The expected impact is loss of availability rather than data theft or modification. Apple addressed the issue through stronger input validation in specified iOS and iPadOS releases.
Executive priority
Schedule prompt remediation through normal mobile patch management. Escalate devices exposed to shared or untrusted networks, but the available evidence does not justify emergency incident response absent observed denial-of-service activity.
Technical view
CVE-2026-28967 is a CWE-400 denial-of-service vulnerability with CVSS 3.1 score 4.9. The vector indicates network reachability, low attack complexity, high privileges, no user interaction, and high availability impact, with no stated confidentiality or integrity impact. Apple fixed it in iOS/iPadOS 18.7.7 and 26.4.
Likely exposure
Exposure is most relevant to iPhones and iPads running releases earlier than the named fixed versions and reachable by an attacker in a privileged network position. The supplied sources do not enumerate precise affected version ranges, so inventory findings should be checked against Apple guidance.
Exploitation context
The supplied record says exploitation requires a privileged network position. It does not describe active exploitation, and the CVE is not identified as being in CISA KEV. No exploit method or observed campaign is documented in the provided sources.
Researcher notes
The stated weakness is uncontrolled resource consumption caused by insufficient input validation. Public details are limited to denial-of-service impact, attacker positioning, CVSS characteristics, and fixed releases. The affected-version data is incomplete, preventing a reliable statement about exact vulnerable build boundaries or the underlying component.
Mitigation direction
- Update eligible devices to iOS or iPadOS 18.7.7 or 26.4.
- Check Apple security guidance for devices unable to install the named releases.
- Prioritize devices regularly connected to untrusted or shared networks.
- Use device-management controls to enforce supported operating-system versions.
Validation and detection
- Inventory iPhone and iPad operating-system versions across the organization.
- Confirm managed devices report iOS/iPadOS 18.7.7, 26.4, or later.
- Review update failures and unsupported devices for continued exposure.
- Verify update enforcement through the organization’s device-management platform.
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
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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-400: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-28967 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
- 4.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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:H/UI:N/S:U/C:N/I:N/A:H1.23.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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/126792CVE reference, apple
- https://support.apple.com/en-us/126793CVE 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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.