Active Exploitation of Critical Enterprise Software Vulnerabilities Added to CISA KEV
Multiple critical, unauthenticated remote code execution and authentication-bypass vulnerabilities in widely deployed enterprise products were reported as actively exploited and, in several cases, added to CISA’s Known Exploited Vulnerabilities (KEV) catalog. SmarterTools SmarterMail is being targeted in ransomware activity via CVE-2026-24423, an unauthenticated RCE caused by missing authentication on the ConnectToHub API (/api/v1/settings/sysadmin/connect-to-hub), where an attacker-controlled server can return JSON containing a CommandMount value that drives arbitrary command execution; the issue affects versions prior to v100.0.9511. Separately, SolarWinds Web Help Desk is affected by CVE-2025-40551 (CVSS 9.8), a deserialization of untrusted data flaw in the AjaxProxy component enabling remote, unauthenticated command execution; CISA added it to KEV amid in-the-wild exploitation and set an accelerated patch deadline for US federal agencies.
In parallel, Fortinet environments using FortiCloud SSO face authentication-bypass risk from CVE-2025-59718, CVE-2025-59719, and CVE-2026-24858, which can allow an attacker with a FortiCloud account to log into organizations’ FortiOS, FortiManager, FortiAnalyzer, FortiProxy, and FortiWeb if SSO is enabled; Kaspersky published SIEM correlation rules to detect related suspicious logins and admin actions. Samsung MagicInfo 9 Server (digital signage management) was also reported with a trio of severe flaws affecting versions prior to 21.1090.1, including CVE-2026-25202 (hardcoded credentials, CVSS 9.8) and CVE-2026-25201 (unauthenticated arbitrary file upload leading to RCE, CVSS 8.8), creating risk of server takeover and potential network compromise; the article does not indicate KEV inclusion or confirmed exploitation for these MagicInfo issues.
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