{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-6450", "assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "state": "PUBLISHED", "assignerShortName": "wolfSSL", "dateReserved": "2026-04-16T19:15:04.573Z", "datePublished": "2026-06-25T20:18:53.909Z", "dateUpdated": "2026-06-26T13:11:51.371Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "shortName": "wolfSSL", "dateUpdated": "2026-06-25T20:18:53.909Z" }, "title": "CRL critical extension bypass in ParseCRL_Extensions", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-295", "description": "CWE-295 Improper Certificate Validation", "type": "CWE" } ] } ], "affected": [ { "vendor": "wolfSSL", "product": "wolfSSL", "collectionURL": "https://github.com/wolfSSL/wolfssl", "versions": [ { "status": "affected", "version": "4.3.0", "lessThanOrEqual": "5.9.1", "versionType": "semver" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "A CRL critical extension bypass exists in ParseCRL_Extensions where critical extensions are not properly enforced, allowing a crafted CRL with an unhandled critical extension to be accepted. This only affects builds with CRL support enabled and where a crafted CRL had a trusted signature when parsed.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
A CRL critical extension bypass exists in ParseCRL_Extensions where critical extensions are not properly enforced, allowing a crafted CRL with an unhandled critical extension to be accepted. This only affects builds with CRL support enabled and where a crafted CRL had a trusted signature when parsed.
" } ] } ], "references": [ { "url": "https://github.com/wolfSSL/wolfssl/pull/10239", "tags": [ "patch" ] }, { "url": "https://www.wolfssl.com/docs/security-vulnerabilities/" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "ADJACENT", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "LOW", "baseScore": 1, "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N" } } ], "credits": [ { "lang": "en", "value": "Oleh Konko (@1seal)", "type": "finder" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-26T13:11:44.804813Z", "id": "CVE-2026-6450", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T13:11:51.371Z" } } ] } }