# CVE-2026-84520

Local kernel buffer overflow in macOS Golden Gate may crash or corrupt kernel memory.

- Page: https://www.vulneraibility.com/cve/CVE-2026-84520
- CVSS: 9.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.45% (percentile 38.7)
- Unvetted proof-of-concept code on GitHub: 1 GitHub proof of concept (first 2026-10-10)
- CISA SSVC: exploitation none, automatable yes, technical impact total (assessed 2026-09-16)
- Weakness: CWE-120
- Published: 2026-09-14

## Affected versions

- Apple macOS: affected < 27

A version outside these ranges is not a statement that it is unaffected.

## Impact

Local attacker can corrupt kernel memory or trigger system crashes, causing denial-of-service and possible privilege escalation.

## Action

Immediate action required

## Recommendation

Install macOS Golden Gate 27 update immediately.

## References

- [other] https://support.apple.com/en-us/149035

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.