Cisco Warns of Unpatched Secure Email Flaws

SecurityWeek reported that Cisco issued warnings about multiple unpatched vulnerabilities in its Secure Email Gateway products. The flaws involve S/MIME and could expose encrypted email content. At the same time the company released patches for critical vulnerabilities in IOS XR and Nexus switches tracked as CVE-2026-20354 and CVE-2026-20355. Those bugs could enable remote code execution and authentication bypass. The details come from the vendor's public disclosures as summarized in the linked article.