The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added four vulnerabilities impacting SimpleHelp, Samsung MagicINFO 9 Server, and D-Link DIR-823X series routers to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation.

The list of vulnerabilities is below –

• CVE-2024-57726 (CVSS score: 9.9) – A missing authorization vulnerability in SimpleHelp that could allow low-privileged technicians to create API keys with excessive permissions, which can then be used to escalate privileges to the server admin role.
• CVE-2024-57728 (CVSS score: 7.2) – A path traversal vulnerability in SimpleHelp that allows admin users to upload arbitrary files anywhere on the file system by uploading a crafted zip file (i.e., zip slip), which can be exploited to execute arbitrary code on the host in the context of the SimpleHelp server user.
• CVE-2024-7399 (CVSS score: 8.8) – A path traversal vulnerability in Samsung MagicINFO 9 Server that could allow an attacker to write arbitrary files as system authority.
• CVE-2025-29635 (CVSS score: 7.5) – A command injection vulnerability in end-of-life D-Link DIR-823X series routers that allows an authorized attacker to execute arbitrary commands on remote devices by sending a POST request to /goform/set_prohibiting via the corresponding function.

While both the SimpleHelp flaws have been marked as “Unknown” against the “Known To Be Used in Ransomware Campaigns?” Indicators, reports from Field Effect and Sophos revealed early last year that the issues were exploited as a precursor to ransomware attacks. One such campaign was attributed to the DragonForce ransomware operation.

The exploitation of CVE-2024-7399 has been linked to malicious activity deploying the Mirai botnet in the past. As for CVE-2025-29635, Akamai disclosed earlier this week that it recorded attempts against D-Link devices to deliver a Mirai botnet variant named “tuxnokill.”

To mitigate the active threats, Federal Civilian Executive Branch (FCEB) agencies are recommended to apply the fixes or, in the case of CVE-2025-29635, discontinue the use of the appliance by May 8, 2026.