{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42764", "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "state": "PUBLISHED", "assignerShortName": "openssl", "dateReserved": "2026-04-29T09:22:27.967Z", "datePublished": "2026-06-09T16:03:25.161Z", "dateUpdated": "2026-06-09T16:03:25.161Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "OpenSSL", "vendor": "OpenSSL", "versions": [{"lessThan": "4.0.1", "status": "affected", "version": "4.0.0", "versionType": "semver"}, {"lessThan": "3.6.3", "status": "affected", "version": "3.6.0", "versionType": "semver"}, {"lessThan": "3.5.7", "status": "affected", "version": "3.5.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Sunwoo Lee (KENTECH)"}, {"lang": "en", "type": "reporter", "value": "Hyuk Lim (KENTECH)"}, {"lang": "en", "type": "reporter", "value": "Seunghyun Yoon (KENTECH)"}, {"lang": "en", "type": "remediation developer", "value": "Sunwoo Lee (KENTECH)"}, {"lang": "en", "type": "remediation developer", "value": "Hyuk Lim (KENTECH)"}, {"lang": "en", "type": "remediation developer", "value": "Seunghyun Yoon (KENTECH)"}], "datePublic": "2026-06-09T14:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Issue summary: Receiving a QUIC initial packet with an invalid token may<br>trigger a NULL pointer dereference in the OpenSSL QUIC server with<br>address validation disabled.<br><br>Impact summary: NULL pointer dereference typically causes abnormal termination<br>of the affected QUIC server process and a Denial of Service.<br><br>If the address validation is disabled in the OpenSSL QUIC server<br>implementation, an attacker can crash the server by sending an initial<br>packet with an invalid or expired token.<br><br>By default, the client address validation is enabled in the OpenSSL QUIC server<br>implementation, which makes the default configuration not vulnerable<br>to this issue. However if the SSL_LISTENER_FLAG_NO_VALIDATE is used with<br>the SSL_new_listener() call, the address validation is disabled making the<br>vulnerable code reachable.<br><br>The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this<br>issue, as the affected code is outside the OpenSSL FIPS module boundary."}], "value": "Issue summary: Receiving a QUIC initial packet with an invalid token may\ntrigger a NULL pointer dereference in the OpenSSL QUIC server with\naddress validation disabled.\n\nImpact summary: NULL pointer dereference typically causes abnormal termination\nof the affected QUIC server process and a Denial of Service.\n\nIf the address validation is disabled in the OpenSSL QUIC server\nimplementation, an attacker can crash the server by sending an initial\npacket with an invalid or expired token.\n\nBy default, the client address validation is enabled in the OpenSSL QUIC server\nimplementation, which makes the default configuration not vulnerable\nto this issue. However if the SSL_LISTENER_FLAG_NO_VALIDATE is used with\nthe SSL_new_listener() call, the address validation is disabled making the\nvulnerable code reachable.\n\nThe FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this\nissue, as the affected code is outside the OpenSSL FIPS module boundary."}], "metrics": [{"format": "other", "other": {"content": {"text": "Moderate"}, "type": "https://openssl-library.org/policies/general/security-policy/"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "shortName": "openssl", "dateUpdated": "2026-06-09T16:03:25.161Z"}, "references": [{"name": "OpenSSL Advisory", "tags": ["vendor-advisory"], "url": "https://openssl-library.org/news/secadv/20260609.txt"}, {"name": "4.0.1 git commit", "tags": ["patch"], "url": "https://github.com/openssl/security/commit/bf29a458c1a231eca87e384c62b9c2553fa57a91"}, {"name": "3.6.3 git commit", "tags": ["patch"], "url": "https://github.com/openssl/security/commit/a45a0aba8095682c88ff4fc4a784892b8c6f0677"}, {"name": "3.5.7 git commit", "tags": ["patch"], "url": "https://github.com/openssl/security/commit/5e3ed291b8af0b03d5d3b9e56a1da69a187e9729"}], "source": {"discovery": "UNKNOWN"}, "title": "NULL Pointer Dereference in QUIC Server Initial Packet Handling", "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Issue summary: Receiving a QUIC initial packet with an invalid token may\ntrigger a NULL pointer dereference in the OpenSSL QUIC server with\naddress validation disabled.\n\nImpact summary: NULL pointer dereference typically causes abnormal termination\nof the affected QUIC server process and a Denial of Service.\n\nIf the address validation is disabled in the OpenSSL QUIC server\nimplementation, an attacker can crash the server by sending an initial\npacket with an invalid or expired token.\n\nBy default, the client address validation is enabled in the OpenSSL QUIC server\nimplementation, which makes the default configuration not vulnerable\nto this issue. However if the SSL_LISTENER_FLAG_NO_VALIDATE is used with\nthe SSL_new_listener() call, the address validation is disabled making the\nvulnerable code reachable.\n\nThe FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this\nissue, as the affected code is outside the OpenSSL FIPS module boundary."}], "id": "CVE-2026-42764", "lastModified": "2026-06-09T17:17:07.693", "metrics": {}, "published": "2026-06-09T17:17:07.693", "references": [{"source": "openssl-security@openssl.org", "url": "https://github.com/openssl/security/commit/5e3ed291b8af0b03d5d3b9e56a1da69a187e9729"}, {"source": "openssl-security@openssl.org", "url": "https://github.com/openssl/security/commit/a45a0aba8095682c88ff4fc4a784892b8c6f0677"}, {"source": "openssl-security@openssl.org", "url": "https://github.com/openssl/security/commit/bf29a458c1a231eca87e384c62b9c2553fa57a91"}, {"source": "openssl-security@openssl.org", "url": "https://openssl-library.org/news/secadv/20260609.txt"}], "sourceIdentifier": "openssl-security@openssl.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "openssl-security@openssl.org", "type": "Secondary"}]}

{}

{}