{"id":"CVE-2021-46828","state":"PUBLISHED","title":"In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lea","description":"In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.","publishedAt":"2022-07-20T00:00:00.000Z","updatedAt":"2026-10-14T12:12:14.520Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=86529758570cef4c73fb9b9c4104fdc510f701ed","https://www.debian.org/security/2022/dsa-5200","https://lists.debian.org/debian-lts-announce/2022/08/msg00004.html","https://security.netapp.com/advisory/ntap-20221007-0004/","https://security.gentoo.org/glsa/202210-33","https://cert-portal.siemens.com/productcert/html/ssa-558014.html","https://cert-portal.siemens.com/productcert/html/ssa-561322.html","https://cert-portal.siemens.com/productcert/html/ssa-398330.html"],"weaknesses":["CWE-755"],"ingestedAt":"2026-10-29T19:49:16.371Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/46xxx/CVE-2021-46828.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-46828","state":"PUBLISHED","datePublished":"2022-07-20T00:00:00.000Z","dateUpdated":"2026-10-14T12:12:14.520Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2022-07-20T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=86529758570cef4c73fb9b9c4104fdc510f701ed"},{"url":"https://www.debian.org/security/2022/dsa-5200","name":"DSA-5200","tags":["vendor-advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/08/msg00004.html","name":"[debian-lts-announce] 20220812 [SECURITY] [DLA 3071-1] libtirpc security update","tags":["mailing-list"]},{"url":"https://security.netapp.com/advisory/ntap-20221007-0004/"},{"url":"https://security.gentoo.org/glsa/202210-33","name":"GLSA-202210-33","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2022-10-31T00:00:00.000Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=86529758570cef4c73fb9b9c4104fdc510f701ed","tags":["x_transferred"]},{"url":"https://www.debian.org/security/2022/dsa-5200","name":"DSA-5200","tags":["vendor-advisory","x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/08/msg00004.html","name":"[debian-lts-announce] 20220812 [SECURITY] [DLA 3071-1] libtirpc security update","tags":["mailing-list","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20221007-0004/","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/202210-33","name":"GLSA-202210-33","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:17:42.388Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-23T13:27:08.884158Z","id":"CVE-2021-46828","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-755","type":"CWE","lang":"en","description":"CWE-755 Improper Handling of Exceptional Conditions"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-05-05T16:44:46.048Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-558014.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-561322.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-14T12:12:14.520Z"},"x_adpType":"supplier"}]}}}