CVE-2026-43805
CRITICAL 9.8A race condition was addressed with improved state handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, watchOS 26.6. An app may be able to cause unexpected system termination or write kernel memory.
ELEVATED IMPACT
Severe if exploited (CVSS 9.8), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.3%chance of exploitation in 30 days · 19th percentile
○ In CISA KEV
○ Public exploit / PoC
Impact if exploited
9.8CVSS 3.1 · CRITICAL
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-43805/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-43805/poc.json
Weakness (CWE)
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Apple | Ipados | < 26.6 |
| Apple | Iphone Os | < 26.6 |
| Apple | Macos | ≥ 14.0 and < 14.8.8 |
| Apple | Macos | ≥ 15.0 and < 15.7.8 |
| Apple | Macos | ≥ 26.0 and < 26.6 |
| Apple | Watchos | < 26.6 |
All CVSS metrics
- CRITICAL 9.8 v3.1 · ADP Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CRITICAL 9.8 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H