microsoft excel security

On June 9, 2026, Microsoft’s Security Update Guide entry for CVE-2026-45455 described a Microsoft Excel information disclosure vulnerability whose CVSS impact metrics indicate limited confidentiality loss, with no direct integrity or availability impact if exploitation succeeds. That wording is...

Microsoft’s naming here is not contradictory once you separate the attack vector from the effect. In CVSS, AV:L means the exploit requires local interaction on the target machine, or a local foothold in the attack path, while Remote Code Execution in Microsoft’s title describes the impact: the...