cve-2025-3928

About this tag
CVE-2025-3928 is a zero-day vulnerability in Commvault's web server that was exploited by nation-state threat actors to breach Commvault's Microsoft Azure environment. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added this vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, urging organizations to apply mitigations. The exploit allowed unauthorized access to client secrets used for authenticating to customer Microsoft 365 backup solutions. Commvault confirmed that customer backup data was not compromised, and only a few customers were impacted. Discussions on WindowsForum.com cover the breach timeline, technical details of the exploit, and steps to secure Azure-based Commvault environments against active attacks.

  1. Commvault Data Breach: Zero-Day CVE-2025-3928 Exploited by Nation-State Attackers in Azure

    In a significant cybersecurity development, Commvault, a leading provider of data protection and backup solutions, has confirmed that a nation-state threat actor exploited a zero-day vulnerability, designated as CVE-2025-3928, to breach its Microsoft Azure environment. This incident has raised...
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    • azure security backup security cisa cloud security commvault cryptography cve-2025-3928 cyber threats cybersecurity data breach data security extended security updates incident response nation-state attacks saas security security patch threat detection vulnerability zero-day vulnerabilities
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    • Forum: Windows News

  2. Commvault Cloud Security Breach: CVE Exploits and Critical Mitigations in 2025

    On May 22, 2025, Commvault, a prominent enterprise data backup provider, issued an urgent advisory concerning active cyber threat activity targeting its Metallic software-as-a-service (SaaS) application, hosted within the Microsoft Azure cloud environment. The U.S. Cybersecurity and...
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    • application secrets cisa cloud security cloudbackupsecurity commvault cve-2025-34028 cve-2025-3928 cybersecurity data security enterprise security microsoft azure microsoft entra path traversal remote code execution saas security security updates threat mitigation vulnerability webshell zero-day
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    • Forum: Windows News

  3. Urgent Alert: Protect Your Azure-Based Commvault Environment from CVE-2025-3928 Exploits

    Racing against an escalating threat landscape, cybersecurity teams are on high alert following the disclosure of CVE-2025-3928—a critical vulnerability impacting Commvault environments running within Microsoft Azure. This zero-day flaw has become a focal point for threat actors, including those...
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    • azure security backup security cisa cloud infrastructure cloud security commvault vulnerability credential hygiene cve-2025-3928 cybersecurity data security incident response kql queries nation-state threats security best practices siem integration threat detection threat intelligence vulnerability management web shell attacks zero-day vulnerabilities
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    • Forum: Windows News

  4. Commvault Backup Data Secure After Azure Cyberattack Mitigates Breach Impact

    Here’s a summary of the SC Media article “Commvault customer backups spared from Azure breach”: Commvault, a major data protection solutions provider, confirmed that its customer backup data was not compromised following a state-sponsored cyberattack on its Azure environment (first announced in...
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    • azure ad azure security backup backupprotection cisa customer security cve-2025-3928 cyberattack cybersecurity cybersecurityinvestigation data resilience data security fbi information security microsoft 365 security security breach vulnerability zero-day vulnerabilities
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    • Forum: Windows News

  5. Commvault Faces Zero-Day Security Breach in Azure Environment: Key Insights & Prevention Tips

    Commvault, a prominent enterprise data backup and recovery solutions provider, recently disclosed a significant security incident involving the exploitation of a zero-day vulnerability, identified as CVE-2025-3928, within its Microsoft Azure environment. This breach, attributed to an...
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    • access control azure security backup cloud security commvault cve-2025-3928 cyber threats cyberattack cybersecurity cybersecurity best practices data exfiltration data security incident response microsoft azure security incident security updates threat mitigation web server vulnerability zero-day vulnerabilities
    • Replies: 0
    • Forum: Windows News