CVE coverage
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CVE-2026-78518
CVSS 8.8
no coverage
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Detection rules
No detection found — yet
None of Sigma, Elastic, Splunk ESCU, YARA, Microsoft Sentinel, Snort, or Suricata currently has a rule referencing CVE-2026-78518.