Security readout for executives and security teams
Plain-English summary
A race condition in Apple operating systems can let an app crash the system or write to kernel memory. Kernel-memory modification can undermine system integrity, making this a critical update even though the supplied sources do not report active exploitation.
Executive priority
Treat remediation as urgent because kernel-memory corruption can threaten confidentiality, integrity, and availability. Accelerate updates across managed Apple fleets, beginning with high-value and unmanaged-app-capable devices. Evidence does not currently justify declaring an active incident solely from this CVE.
Technical view
CVE-2026-43805 is a CWE-362 race condition addressed through improved state handling. Apple states that an app may cause unexpected system termination or write kernel memory. The bundle assigns CVSS 3.1 score 9.8, but its network vector is not reconciled with the app-based description.
Likely exposure
Potentially exposed assets are iPhones, iPads, Macs, and Apple Watches running releases older than the named fixed versions. The source bundle does not provide reliable lower affected-version boundaries, so precise exposure cannot be established from it alone.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no supplied source reports active exploitation. Public exploit availability, attack prerequisites, and whether malicious code must already execute as a local app are not established by the evidence provided.
Researcher notes
The description supports a race-condition impact involving denial of service or kernel-memory writes. Exact vulnerable ranges, the affected component, required privileges, and exploitation mechanics are absent. The supplied CVSS vector indicates remote, unauthenticated exploitation, but that conflicts with the app-focused description and requires authoritative clarification.
Mitigation direction
- Update iPhones and iPads to iOS or iPadOS 26.6 or later.
- Update Macs to Sequoia 15.7.8, Sonoma 14.8.8, Tahoe 26.6, or later.
- Update Apple Watches to watchOS 26.6 or later.
- Prioritize devices permitted to install untrusted or unmanaged applications.
- Check current Apple guidance for any additional mitigations or revised affected-version details.
Validation and detection
- Inventory deployed iOS, iPadOS, macOS, and watchOS versions.
- Confirm every device meets the applicable fixed-version threshold.
- Identify unsupported devices unable to receive the named security release.
- Review endpoint records for unexplained system terminations, without treating crashes alone as proof of exploitation.
- Recheck Apple advisories for updated exploitation or affected-version 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-362: 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-2026-43805 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/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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.