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  1. CVE-2025-54899: Excel memory-safety flaw enabling local code execution - patch now

    Microsoft’s security tracker now lists CVE-2025-54899 as a memory-safety flaw in Microsoft Excel that can lead to local code execution when a crafted spreadsheet is opened — an entry that joins a steady stream of Excel parsing bugs that remain a favored initial-access vector for attackers...
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    • asr cve-2025-54899 edr excel excel memory safety heap overflow initial access local code execution memory issues memory safety microsoft office msrc office patch management phishing-vector protected view risk management security advisory update guide vulnerability
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    • Forum: Security Alerts

  2. ScreenConnect Abuse: Threat Actors Use RMM as Initial Access Vector

    Since March 2025, threat actors have increasingly weaponized ConnectWise ScreenConnect installers — using trojanized, stripped-down ClickOnce runners and other delivery tricks to convert a trusted remote administration tool into a stealthy initial-access vector that drops multiple RATs and...
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    • amsi bypass asyncrat authenticode stuffing clickonce connectwise endpoint security initial access lateral movement msp security phishing powershell rat process hollowing purehvnc rmm screenconnect abuse signed installers threat intelligence zero trust remote access
    • Replies: 0
    • Forum: Windows News

  3. AA20-259A: Iran-Based Threat Actor Exploits VPN Vulnerabilities

    Original release date: September 15, 2020 Summary This Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework. See the ATT&CK for Enterprise framework for all referenced threat actor techniques. This product was written by the Cybersecurity and...
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    • cisa cve cybersecurity data exfiltration exploit fbi initial access iran mitigation network defense persistence rdp remote access security tactics techniques threat actors vpn vulnerabilities web shells
    • Replies: 0
    • Forum: Security Alerts