CVE-2026-845437.5High
CVE-2026-84543: Apple macOS vulnerability
Apple · macOS
Vendor fix available · Affected: Apple macOS · Exploitation: public proof of concept (unverified)
ExploitationProof of concept public
Not in CISA KEV as of catalogue 2026.11.13 (13 Nov)
- In CISA KEV: not seen
- Exploited (reported): not seen
- Scanning observed: not seen
- Proof of concept public1 public GitHub repository (unverified), listed by PoC-in-GitHub24 Sep
- Not established: not seen
0.4%probability of exploitation in the next 30 days
37th percentile
050100
Higher than 37% of scored CVEs
7.5HighCVSS
LowMediumHighCrit.
DescriptionNVD
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may cause unexpected system termination or corrupt kernel memory.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Apple
- Published
- September 2026
What changed
- PoC-in-GitHub lists 1 public GitHub repository (unverified) PoC-in-GitHub
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 29 Sep.
- macOS SMB Flaw Exposes Macs to Kernel Panics via Malicious SharesSecurityOnline · first in our coverage
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