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Cisco fixes Unified Communications RCE zero day exploited in attacks

BleepingComputer
Actively Exploited
CVEZero-dayCiscoVulnerabilityPatchRCECritical

Overview

Cisco has addressed a serious vulnerability in its Unified Communications and Webex Calling platforms, identified as CVE-2026-20045. This remote code execution flaw was found to be actively exploited by attackers, posing a significant risk to users. The vulnerability could allow unauthorized access to systems, potentially leading to data breaches or service disruptions. Organizations using these Cisco products are urged to apply the latest updates to mitigate the risk. This incident underscores the importance of timely patch management in maintaining cybersecurity hygiene.

Key Takeaways

  • Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
  • Affected Systems: Cisco Unified Communications, Cisco Webex Calling
  • Action Required: Cisco has released patches for the vulnerability.
  • Timeline: Newly disclosed

Original Article Summary

Cisco has fixed a critical Unified Communications and Webex Calling remote code execution vulnerability, tracked as CVE-2026-20045, that has been actively exploited as a zero-day in attacks. [...]

Impact

Cisco Unified Communications, Cisco Webex Calling

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Cisco has released patches for the vulnerability. Users should update to the latest versions of Unified Communications and Webex Calling as soon as possible to protect against potential exploits.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Zero-day, Cisco, and 4 more.

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