CVE-2026-97753High· 8.8▾ TwilightHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.2 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.8%
Last analysed / modified upstream
0.8% → 0.8%
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
365_appsmicrosoft_365office_2021office_2024office_online_server < 16.0.10417.20228Upgrade past the affected range:
office_online_server 16.0.10417.20228Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-97751High· 8.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.