Two UltraVNC repeater vulnerabilities enable arbitrary code execution (CVE-2026-7840) plus admin access via a hardcoded password. Update now. #UltraVNC #RemoteAccess #CVE20267839 #CVE20267840 #ArbitraryCodeExecution #BufferOverflow #Vulnerability https://securityonline.info/ultravnc-repeater-vulnerabilities-cve-2026-7840/?utm_source=mastodon&utm_medium=jetpack_social