CVE-2026-4434

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2026.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Server", "source": "cna", "vendor": "Devolutions"}, "product": "server", "vendor": "devolutions"}], "analysis": {"en": {"generated_at": "2026-03-30T16:30:04.245448+00:00", "value": {"mitigation_remediation": ["Apply the vendor patch or update referenced in the advisory https://devolutions.net/security/advisories/DEVO-2026-0005/", "Ensure TLS certificate verification is enabled in PAM WinRM connections", "Verify that the configuration change has taken effect and that certificates are being validated", "Monitor logs for signs of unauthorized WinRM connections", "Check Devolutions\u2019 website or support for future updates or additional guidance"], "summary": {"action": "Immediate Patch", "impact": "Man\u2011in\u2011the\u2011Middle via disabled TLS certificate verification"}, "threat_synthesis": {"affected_systems": "Devolutions:Server is the affected product. No specific version information is provided in the CVE data, so any deployed instance of Devolutions Server may be vulnerable until a patch is applied.", "description_and_impact": "Improper validation of TLS certificates in Devolutions Server\u2019s PAM WinRM connections allows an attacker to intercept network traffic and alter data. The vulnerability, identified as CWE\u2011295, disables certificate verification, enabling a man\u2011in\u2011the\u2011middle attack that compromises confidentiality and integrity of communication between the server and its clients.", "risk_and_exploitability": "The CVSS score of 8.1 indicates high severity, while the EPSS score of less than 1% suggests a low likelihood of exploitation in the wild. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Based on the description, the likely attack vector is a network adversary capable of intercepting or forging WinRM traffic where certificate verification is disabled."}}}}, "created": "2026-03-20T16:27:17.209647+00:00", "updated": "2026-03-30T20:58:17.123703+00:00", "vendors": ["devolutions", "devolutions$PRODUCT$server"]}