Security readout for executives and security teams
Plain-English summary
A flaw in Apple operating systems can let an app trigger an unexpected system shutdown or crash. Apple corrected the integer-overflow condition through stronger input validation. The supplied evidence does not establish data theft, code execution, or active exploitation.
Executive priority
Prioritize an expedited, controlled update campaign across managed Apple devices. The supplied critical rating warrants urgency, although the documented impact is system termination rather than confirmed compromise. Track completion and exceptions, especially for operationally important devices.
Technical view
CVE-2026-43769 is a CWE-190 integer overflow affecting multiple Apple platforms. Apple states that an app may cause unexpected system termination. The bundle assigns CVSS 3.1 score 9.8, but its network-access and full confidentiality, integrity, and availability impacts are not explained by the supplied description.
Likely exposure
Potential exposure includes devices running releases earlier than iOS/iPadOS 26.6, the listed fixed macOS releases, tvOS 26.6, visionOS 26.6, or watchOS 26.6. Exact vulnerable version ranges are absent, so confirm applicability through Apple’s platform-specific advisories and device inventory.
Exploitation context
The bundle marks this CVE as absent from KEV and provides no evidence of active exploitation or a public exploit. The documented outcome is unexpected system termination caused by an app. Broader compromise claims would be unsupported.
Researcher notes
The record contains a material evidence gap: CVSS 9.8 specifies network reachability and high confidentiality, integrity, and availability impact, while Apple’s supplied description only identifies an app-triggered termination. Exact affected version ranges and the vulnerable component are not provided. Avoid inferring remote code execution or data compromise.
Mitigation direction
- Update iPhones and iPads to iOS or iPadOS 26.6.
- Update macOS to Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6, as applicable.
- Update Apple TV, Vision Pro, and Apple Watch devices to version 26.6.
- Check Apple’s platform-specific advisories for prerequisites and any newer superseding releases.
- Prioritize managed, business-critical, and broadly application-enabled devices.
Validation and detection
- Inventory affected Apple platforms and compare installed versions with the listed fixed releases.
- Verify updates completed successfully through endpoint or device-management reporting.
- Review system and application telemetry for unexplained terminations before and after remediation.
- Confirm unsupported or deferred devices have documented ownership and remediation plans.
- Recheck Apple advisories for clarified affected ranges or exploitation information.
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-190: 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-2026-43769 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.
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:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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/128066CVE reference, apple
- https://support.apple.com/en-us/128067CVE reference, apple
- https://support.apple.com/en-us/128068CVE reference, apple
- https://support.apple.com/en-us/128069CVE reference, apple
- https://support.apple.com/en-us/128070CVE reference, apple
- https://support.apple.com/en-us/128071CVE reference, apple
- https://support.apple.com/en-us/128072CVE 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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.