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cve 2026 21258

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    CVE-2026-21258: Excel Information Disclosure and Patch Guidance

    Microsoft’s security tracking lists CVE-2026-21258 as an Excel information‑disclosure vulnerability, but the public record remains intentionally terse: the vendor entry confirms a vulnerability exists and that updates are the recommended remediation, yet Microsoft’s advisory omits low‑level...
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    • cve 2026 21258 excel vulnerability information disclosure office security
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    • Forum: Security Alerts
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