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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*", "matchCriteriaId": "DA3FA1CB-CEDC-4D49-9ECD-99BBF1602312", "versionEndExcluding": "5.9.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An integer overflow vulnerability existed in the static function wolfssl_add_to_chain, that caused heap corruption when certificate data was written out of bounds of an insufficiently sized certificate buffer. wolfssl_add_to_chain is called by these API: wolfSSL_CTX_add_extra_chain_cert, wolfSSL_CTX_add1_chain_cert, wolfSSL_add0_chain_cert. These API are enabled for 3rd party compatibility features: enable-opensslall, enable-opensslextra, enable-lighty, enable-stunnel, enable-nginx, enable-haproxy. This issue is not remotely exploitable, and would require that the application context loading certificates is compromised."}, {"lang": "es", "value": "Una vulnerabilidad de desbordamiento de entero exist\u00eda en la funci\u00f3n est\u00e1tica wolfssl_add_to_chain, que causaba corrupci\u00f3n de la pila cuando los datos del certificado se escrib\u00edan fuera de los l\u00edmites de un b\u00fafer de certificado de tama\u00f1o insuficiente. wolfssl_add_to_chain es llamada por estas API: wolfSSL_CTX_add_extra_chain_cert, wolfSSL_CTX_add1_chain_cert, wolfSSL_add0_chain_cert. Estas API est\u00e1n habilitadas para caracter\u00edsticas de compatibilidad de terceros: enable-opensslall, enable-opensslextra, enable-lighty, enable-stunnel, enable-nginx, enable-haproxy. Este problema no es explotable de forma remota y requerir\u00eda que el contexto de la aplicaci\u00f3n que carga los certificados est\u00e9 comprometido."}], "id": "CVE-2026-3229", "lastModified": "2026-03-26T20:57:44.620", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.2, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "GREEN", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/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:X/R:X/V:X/RE:X/U:Green", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "facts@wolfssl.com", "type": "Secondary"}]}, "published": "2026-03-19T21:17:12.330", "references": [{"source": "facts@wolfssl.com", "tags": ["Patch", "Issue Tracking"], "url": "https://github.com/wolfSSL/wolfssl/pull/9827"}], "sourceIdentifier": "facts@wolfssl.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "facts@wolfssl.com", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,5.9.0)"}}], "enrichment": {"confidence": 97.0, "confidence_source": "matching", "scores": [{"score": 97.0, "source": "matching"}]}, "original": {"product": "wolfSSL", "source": "cna", "vendor": "wofSSL"}, "product": "wolfssl", "vendor": "wolfssl"}], "analysis": {"en": {"generated_at": "2026-03-26T22:40:39.817291+00:00", "value": {"mitigation_remediation": ["Update wolfSSL to the latest release or apply any available patch that addresses the integer overflow in the certificate chain allocator.", "Disable unused compatibility APIs (enable-opensslall, enable-opensslextra, enable-lighty, enable-stunnel, enable-nginx, enable-haproxy) if they are not required.", "Verify that certificate buffers are adequately sized before passing certificates to wolfSSL.", "Conduct a code review or audit of any custom certificate handling paths in the application.", "Monitor the application for abnormal crashes or memory corruption indicators after configuration changes."], "summary": {"action": "Assess", "impact": "Heap corruption during certificate chain allocation"}, "threat_synthesis": {"affected_systems": "The flaw affects the wolfSSL library, particularly when the APIs wolfSSL_CTX_add_extra_chain_cert, wolfSSL_CTX_add1_chain_cert, and wolfSSL_add0_chain_cert are used. These APIs are enabled for third\u2011party compatibility with OpenSSL, LibreSSL, Lighty, stunnel, nginx, and haproxy. No specific version ranges are provided.", "description_and_impact": "An integer overflow in the static function wolfssl_add_to_chain causes heap corruption when certificate data is written beyond the bounds of an insufficiently sized buffer. This flaw occurs during certificate chain processing and can lead to application crashes or unpredictable behavior. The vulnerability is confined to the certificate loading context and is not remotely exploitable.", "risk_and_exploitability": "CVSS is 1.2, reflecting low impact and limited exploitation. EPSS is under 1%, and the issue is not listed in the CISA KEV catalog. Since the flaw is local and requires control over the certificate loading process, it is unlikely to be leveraged in a remote attack. Nonetheless, if an attacker has local code execution privileges they could use the overflow to corrupt memory and potentially alter program behavior."}}}}, "created": "2026-03-20T08:55:53.566389+00:00", "updated": "2026-03-27T09:21:37.754883+00:00", "vendors": ["wolfssl", "wolfssl$PRODUCT$wolfssl"]}