Adobe ColdFusion Max-Severity RCE Flaw CVE-2026-48282 Exploited Within Days of Patch

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Adobe released a patch on July 1, 2026, for CVE-2026-48282, a maximum-severity remote code execution vulnerability affecting ColdFusion 2025.9, 2023.20, and earlier versions. The flaw requires no authentication or user interaction, allowing attackers to execute code on exposed servers simply by sending a crafted request. Canada's Cyber Centre issued an active-exploitation warning as early as July 3, just two days after the fix became available. Approximately 800 internet-facing ColdFusion instances have been identified by Shadowserver, all potentially at risk of probing or compromise. Adobe is urging administrators to apply the updates within 72 hours and to take unpatched servers offline if an immediate update is not possible.

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