{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-11933", "assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "state": "PUBLISHED", "assignerShortName": "wolfSSL", "dateReserved": "2025-10-17T22:15:26.318Z", "datePublished": "2025-11-21T22:19:08.654Z", "dateUpdated": "2025-11-24T17:59:45.393Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://www.wolfssl.com/download/", "defaultStatus": "unaffected", "modules": ["wolfssl"], "packageName": "wolfSSL", "platforms": ["MacOS", "Linux"], "product": "wolfSSL", "programFiles": ["src/tls.c"], "repo": "https://github.com/wolfSSL/wolfssl", "vendor": "wofSSL", "versions": [{"status": "affected", "version": "v5.8.2"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Jaehun Lee, Pohang University of Science and Technology (POSTECH)"}, {"lang": "en", "type": "coordinator", "value": "Kyungmin Bae, Pohang University of Science and Technology (POSTECH)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.<br><br>"}], "value": "Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions."}], "impacts": [{"capecId": "CAPEC-217", "descriptions": [{"lang": "en", "value": "CAPEC-217 Exploiting Incorrectly Configured SSL/TLS"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 2.3, "baseSeverity": "LOW", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "CWE-20 Improper Input Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "shortName": "wolfSSL", "dateUpdated": "2025-11-21T22:19:08.654Z"}, "references": [{"url": "https://github.com/wolfSSL/wolfssl"}, {"url": "https://github.com/wolfSSL/wolfssl/pull/9132"}], "source": {"discovery": "UNKNOWN"}, "title": "DoS Vulnerability in wolfSSL TLS 1.3 CKS Extension", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-11-24T16:20:56.460030Z", "id": "CVE-2025-11933", "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": "2025-11-24T17:59:45.393Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-11933", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-11-24T16:20:56.460030Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-11-24T16:21:12.511Z"}}], "cna": {"title": "DoS Vulnerability in wolfSSL TLS 1.3 CKS Extension", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Jaehun Lee, Pohang University of Science and Technology (POSTECH)"}, {"lang": "en", "type": "coordinator", "value": "Kyungmin Bae, Pohang University of Science and Technology (POSTECH)"}], "impacts": [{"capecId": "CAPEC-217", "descriptions": [{"lang": "en", "value": "CAPEC-217 Exploiting Incorrectly Configured SSL/TLS"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/wolfSSL/wolfssl", "vendor": "wofSSL", "modules": ["wolfssl"], "product": "wolfSSL", "versions": [{"status": "affected", "version": "v5.8.2"}], "platforms": ["MacOS", "Linux"], "packageName": "wolfSSL", "programFiles": ["src/tls.c"], "collectionURL": "https://www.wolfssl.com/download/", "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/wolfSSL/wolfssl"}, {"url": "https://github.com/wolfSSL/wolfssl/pull/9132"}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.", "supportingMedia": [{"type": "text/html", "value": "Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.<br><br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-20", "description": "CWE-20 Improper Input Validation"}]}], "providerMetadata": {"orgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "shortName": "wolfSSL", "dateUpdated": "2025-11-21T22:19:08.654Z"}}}, "cveMetadata": {"cveId": "CVE-2025-11933", "state": "PUBLISHED", "dateUpdated": "2025-11-24T17:59:45.393Z", "dateReserved": "2025-10-17T22:15:26.318Z", "assignerOrgId": "50d2cd11-d01a-48ed-9441-5bfce9d63b27", "datePublished": "2025-11-21T22:19:08.654Z", "assignerShortName": "wolfSSL"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions."}], "id": "CVE-2025-11933", "lastModified": "2025-11-25T22:16:42.557", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "facts@wolfssl.com", "type": "Secondary"}]}, "published": "2025-11-21T23:15:44.293", "references": [{"source": "facts@wolfssl.com", "url": "https://github.com/wolfSSL/wolfssl"}, {"source": "facts@wolfssl.com", "url": "https://github.com/wolfSSL/wolfssl/pull/9132"}], "sourceIdentifier": "facts@wolfssl.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "facts@wolfssl.com", "type": "Secondary"}]}

{}

{"created": "2025-11-24T09:08:11.291886+00:00", "updated": "2025-11-24T09:08:11.291922+00:00", "vendors": ["wolfssl", "wolfssl$PRODUCT$wolfssl"]}