CISA ICS advisories disclose multiple critical-manufacturing vulnerabilities in Hitachi Energy, Ilevia, and Open62541
CISA published multiple ICS advisories affecting critical manufacturing environments, including a critical RADIUS forgery weakness impacting Hitachi Energy XMC20 and FOX61x when configured for remote RADIUS authentication. The issue (tracked as CVE-2024-3596, CVSS v3.1 9.0) stems from the RADIUS protocol’s use of an MD5 Response Authenticator, enabling a local attacker to perform a chosen-prefix collision and alter server responses (e.g., Access-Accept, Access-Reject, Access-Challenge), with potential confidentiality, integrity, and availability impact.
Separately, CISA warned that Ilevia EVE X1 Server (<= 4.7.18.0) contains multiple vulnerabilities (including CVE-2025-34183/34184/34185/34186/34187 and CVE-2025-34512/34513/34517/34518) that can enable pre-auth file disclosure (via the db_log POST parameter) and unauthenticated OS command injection (in /ajax/php/login.php), potentially leading to arbitrary command execution and sensitive information exposure; at least one issue is scored CVSS 9.8. CISA also disclosed an out-of-bounds write in o6 Automation GmbH Open62541 (CVE-2026-1301, CVSS 5.7) where, with PubSub and JSON enabled, a crafted JSON message can trigger pre-auth memory corruption and a reliable denial of service.
Timeline
Feb 5, 2026
CISA publishes Open62541 denial-of-service vulnerability advisory
CISA published an ICS advisory for CVE-2026-1301 in o6 Automation GmbH's Open62541, describing an out-of-bounds write in builds with PubSub and JSON enabled. A crafted JSON message can trigger memory corruption and a denial of service before authentication in affected versions from 1.5-rc1 up to but not including 1.5-rc2.
Feb 5, 2026
CISA publishes Ilevia EVE X1 Server vulnerability advisory
CISA issued an ICS advisory covering multiple vulnerabilities in Ilevia EVE X1 Server versions up to 4.7.18.0, including unauthenticated OS command injection, path traversal, plaintext credential exposure in logs, and reflected XSS. The advisory notes some issues could enable full system compromise, while Ilevia reportedly declined to service several firmware vulnerabilities and instead advised customers not to expose port 8080 to the internet.
Feb 5, 2026
CISA republishes Hitachi Energy advisories for XMC20 and FOX61x
CISA republished Hitachi Energy's CSAF advisories for the XMC20 and FOX61x vulnerabilities to increase visibility. The advisories identify affected versions and recommend standard ICS mitigations such as reducing network exposure, isolating control networks, and using VPNs for remote access.
Feb 5, 2026
Hitachi Energy discloses critical RADIUS flaw in XMC20 and FOX61x
Hitachi Energy disclosed a critical vulnerability in its XMC20 and FOX61x products when configured for remote RADIUS authentication. The flaw, tracked as CVE-2024-3596, stems from weaknesses in the RADIUS protocol's MD5 Response Authenticator that could allow forgery attacks affecting confidentiality, integrity, and availability.
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