{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-10-02T09:12:06.633","vulnerabilities":[{"cve":{"id":"CVE-2026-4395","sourceIdentifier":"facts@wolfssl.com","published":"2026-03-19T21:17:13.660","lastModified":"2026-06-17T10:56:31.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Heap-based buffer overflow in the KCAPI ECC code path of wc_ecc_import_x963_ex() in wolfSSL wolfcrypt allows a remote attacker to write attacker-controlled data past the bounds of the pubkey_raw buffer via a crafted oversized EC public key point. The WOLFSSL_KCAPI_ECC code path copies the input to key->pubkey_raw (132 bytes) using XMEMCPY without a bounds check, unlike the ATECC code path which includes a length validation. This can be triggered during TLS key exchange when a malicious peer sends a crafted ECPoint in ServerKeyExchange."},{"lang":"es","value":"Un desbordamiento de búfer basado en montículo en la ruta de código KCAPI ECC de wc_ecc_import_x963_ex() en wolfSSL wolfcrypt permite a un atacante remoto escribir datos controlados por el atacante más allá de los límites del búfer pubkey_raw a través de un punto de clave pública EC sobredimensionado y manipulado. La ruta de código WOLFSSL_KCAPI_ECC copia la entrada a key->pubkey_raw (132 bytes) usando XMEMCPY sin una verificación de límites, a diferencia de la ruta de código ATECC que incluye una validación de longitud. Esto puede ser activado durante el intercambio de claves TLS cuando un par malicioso envía un ECPoint manipulado en ServerKeyExchange."}],"affected":[{"source":"facts@wolfssl.com","affectedData":[{"vendor":"wolfSSL","product":"wolfssl","defaultStatus":"unaffected","modules":["wolfcrypt ECC"],"platforms":["Linux"],"programFiles":["wolfcrypt/src/ecc.c"],"programRoutines":[{"name":"wc_ecc_import_x963_ex"}],"repo":"https://github.com/wolfSSL/wolfssl","versions":[{"version":"0","lessThanOrEqual":"5.8.4","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"facts@wolfssl.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/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:Y/R:U/V:D/RE:L/U:Amber","baseScore":1.3,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"YES","Recovery":"USER","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"LOW","providerUrgency":"AMBER"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-20T17:09:25.537926Z","id":"CVE-2026-4395","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"facts@wolfssl.com","type":"Secondary","description":[{"lang":"en","value":"CWE-122"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*","versionEndExcluding":"5.9.0","matchCriteriaId":"DA3FA1CB-CEDC-4D49-9ECD-99BBF1602312"}]}]}],"references":[{"url":"https://github.com/wolfSSL/wolfssl/pull/9988","source":"facts@wolfssl.com","tags":["Issue Tracking","Patch"]}]}}]}