• Ransomware actors target unpatched SimpleHelp RMM to breach utility billing software provider customers. • Vulnerability CVE-2024-57727, a path traversal flaw, exploited in SimpleHelp 5.5.7 and earlier. • Attack pattern observed since January 2025, part of broader ransomware double‑extortion strategy. • CISA added CVE-2024-57727 to its Known Exploited Vulnerabilities catalog on Feb. 13, 2025. • Advisory urges vendors, downstream customers, and end users to apply immediate mitigations. • Mitigations align with CISA/NIST Cross‑Sector Cybersecurity Performance Goals for critical infrastructure.

Article Summaries:

  • Ransomware Actors Exploit Unpatched SimpleHelp Remote Monitoring and Management to Compromise Utility Billing Software Provider Summary The Cybersecurity and Infrastructure Security Agency (CISA) is releasing this advisory in response to ransomware actors leveraging unpatched instances of a vulnerability in SimpleHelp Remote Monitoring and Management (RMM) to compromise customers of a utility billing software provider. This incident reflects a broader pattern of ransomware actors targeting organizations through unpatched versions of SimpleHelp RMM since January 2025. SimpleHelp versions 5.5.7

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