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. Apple corrected the integer-overflow condition through stronger input validation. The supplied severity is critical, but public details describe termination only and do not establish data theft, system takeover, or active exploitation.
Executive priority
Prioritize accelerated patching across managed Apple fleets because the supplied rating is critical and the affected platform range is broad. Balance urgency with the limited disclosed impact: current evidence supports denial of service, not confirmed compromise or active exploitation.
Technical view
CVE-2026-43769 is a CWE-190 integer overflow affecting multiple Apple operating systems. Apple states that an app may cause unexpected system termination. Fixed releases are iOS/iPadOS 18.7.10 and 26.6, macOS Sequoia 15.7.8, Sonoma 14.8.8, Tahoe 26.6, and version 26.6 of tvOS, visionOS, and watchOS.
Likely exposure
Organizations operating affected Apple platforms below the named fixed releases should treat those devices as potentially exposed. The source bundle does not provide reliable lower version boundaries, affected components, or deployment prerequisites, so precise exposure cannot be determined from version inventory alone.
Exploitation context
The bundle says this CVE is not in KEV and provides no evidence of active exploitation or a public exploit. Although the supplied CVSS is 9.8, Apple's description only supports app-triggered unexpected termination. The apparent difference between CVSS impact and the published behavior remains unexplained.
Researcher notes
Public technical detail is sparse: no affected component, trigger format, vulnerable version range, or root-cause analysis is supplied beyond CWE-190 and improved input validation. Researchers should avoid inferring remote reachability or confidentiality and integrity impact solely from the CVSS vector.
Mitigation direction
- Update affected Apple devices to the applicable fixed release or later.
- Prioritize managed devices running versions below the listed fixed releases.
- Check Apple security guidance for platform-specific installation requirements.
- Apply organizational controls limiting installation of untrusted apps where practical.
Validation and detection
- Inventory iOS, iPadOS, macOS, tvOS, visionOS, and watchOS versions.
- Confirm each device runs the applicable fixed release or later.
- Verify updates completed successfully through device-management or local version records.
- Monitor Apple advisories for revised impact 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
- https://support.apple.com/en-us/148287CVE 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.