Cisco vendor security report

Security & Breach News (last 12 months)

• Cisco flaw exploited as grid operator warns of power curbs

  A Cisco flaw is being actively exploited according to the article title, though the snippet focuses on PJM Interconnection's power management response to grid strain. The article indicates a confirmed Cisco vulnerability with active exploitation affecting critical infrastructure.

  MSNMay 13, 2026

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• Cisco Releases Fix for DoS Flaw That Requires Manual Reboot to Recover

  Cisco released security updates to address a high-severity denial-of-service vulnerability in Crosswork Network Controller and Network that requires manual reboot to recover. This is a confirmed vulnerability directly affecting Cisco products.

  Security BoulevardMay 11, 2026

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• New Cisco Network Vulnerability Let Remote Attacker Cause DoS Attack

  Cisco issued a critical security advisory regarding a high-severity vulnerability in its Crosswork Network Controller (CNC) and Network Services that could allow remote attackers to cause denial-of-service attacks. This is a confirmed vulnerability disclosure directly involving Cisco products.

  CyberSecurityNewsMay 11, 2026

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• Cisco patches high-severity flaws enabling SSRF, code execution attacks

  Cisco released patches for high-severity vulnerabilities in Unity Connection that could enable Server-Side Request Forgery (SSRF) attacks, code execution, or denial of service. These are confirmed vulnerabilities requiring vendor patches rather than an active breach.

  Security AffairsMay 11, 2026

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• Cisco Patches High-Severity Vulnerabilities in Enterprise Products

  Cisco released patches for multiple high-severity vulnerabilities in enterprise products that could enable code execution, SSRF attacks, and denial-of-service conditions. This represents a confirmed vulnerability requiring immediate patching across affected Cisco systems.

  SecurityWeekMay 11, 2026

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• New Cisco DoS flaw requires manual reboot to revive devices

  Cisco released a patch for a denial-of-service vulnerability affecting Crosswork Network Controller and Network Services Orchestrator that requires manual device reboots to restore service. This is a confirmed vulnerability directly impacting Cisco products.

  BleepingComputerMay 11, 2026

  high