Cisco Discloses Unpatched S/MIME Flaws, Patches Critical IOS XR and Nexus Bugs

Cisco has publicly disclosed unpatched S/MIME vulnerabilities in its Secure Email products that could expose encrypted email content, while also releasing patches for critical IOS XR and Nexus switch vulnerabilities enabling remote code execution and authentication bypass. The unpatched flaws pose an immediate risk to email confidentiality, and the critical switch bugs could allow full network compromise if exploited. The disclosure indicates active exploitation or high risk, but no in-the-wild attacks are confirmed.