Published on: 22 January 2026
Published on: 22 January 2026
Cisco has released security updates to address multiple vulnerabilities in several Cisco devices and software. For information about the vulnerabilities and the attacking vectors, please refer to the corresponding security advisories at the vendor's website.
Reports indicated that the critical remote code execution vulnerability (CVE-2026-20045) in Cisco Products for Cisco Unified Communications Manager, Cisco Unified Communications Manager IM&P, Cisco Unified Communications Manager SME and Webex Calling Dedicated Instance is being exploited in the wild. Cisco has released security updates to address the issues. System administrators are advised to take immediate action to patch your affected systems to mitigate the elevated risk of cyber attacks.
For detailed information of the affected products, please refer to the section 'Affected Products' of corresponding security advisory at vendor's website.
Depending on the vulnerabilities exploited, a successful attack could lead to remote code execution, denial of service, elevation of privilege or security restriction bypass on an affected system.
Software updates for affected systems are now available. System administrators of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk. For detailed information of the available patches, please refer to the section "Fixed Software" of corresponding security advisory at vendor's website.
System administrators should contact their product support vendors for the fixes and assistance.