CVE-2026-2646

{"id": "CVE-2026-2646", "cveTags": [], "metrics": {"cvssMetricV40": [{"type": "Secondary", "source": "facts@wolfssl.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.0, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "PROOF_OF_CONCEPT", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-19T18:16:22.223", "references": [{"url": "https://github.com/wolfSSL/wolfssl/pull/9748", "source": "facts@wolfssl.com"}, {"url": "https://github.com/wolfSSL/wolfssl/pull/9949", "source": "facts@wolfssl.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "facts@wolfssl.com", "description": [{"lang": "en", "value": "CWE-122"}]}], "descriptions": [{"lang": "en", "value": "A heap-buffer-overflow vulnerability exists in wolfSSL's wolfSSL_d2i_SSL_SESSION() function. When deserializing session data with SESSION_CERTS enabled, certificate and session id lengths are read from an untrusted input without bounds validation, allowing an attacker to overflow fixed-size buffers and corrupt heap memory. A maliciously crafted session would need to be loaded from an external source to trigger this vulnerability. Internal sessions were not vulnerable."}, {"lang": "es", "value": "Una vulnerabilidad de desbordamiento de b\u00fafer de mont\u00f3n existe en la funci\u00f3n wolfSSL_d2i_SSL_SESSION() de wolfSSL. Al deserializar datos de sesi\u00f3n con SESSION_CERTS habilitado, las longitudes del certificado y del ID de sesi\u00f3n se leen de una entrada no confiable sin validaci\u00f3n de l\u00edmites, permitiendo a un atacante desbordar b\u00faferes de tama\u00f1o fijo y corromper la memoria del mont\u00f3n. Una sesi\u00f3n creada maliciosamente necesitar\u00eda ser cargada desde una fuente externa para activar esta vulnerabilidad. Las sesiones internas no eran vulnerables."}], "lastModified": "2026-03-20T13:39:46.493", "sourceIdentifier": "facts@wolfssl.com"}