{"id":"CVE-2021-34453","state":"PUBLISHED","title":"Microsoft Exchange Server Denial of Service Vulnerability","description":"Microsoft Exchange Server Denial of Service Vulnerability","publishedAt":"2021-10-13T00:26:37.000Z","updatedAt":"2024-08-04T00:12:50.102Z","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/E:U/RL:O/RC:C","source":"microsoft"},"assigner":"microsoft","products":["Microsoft Microsoft Exchange Server 2019 Cumulative Update 11","Microsoft Microsoft Exchange Server 2019 Cumulative Update 10","Microsoft Microsoft Exchange Server 2016 Cumulative Update 21","Microsoft Microsoft Exchange Server 2016 Cumulative Update 22"],"affected":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 11","versions":[{"version":"15.02.0","status":"affected","lessThan":"15.02.0986.009","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:*"],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 10","versions":[{"version":"15.02.0","status":"affected","lessThan":"15.02.0922.014","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_10:*:*:*:*:*:*"],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 21","versions":[{"version":"15.01.0","status":"affected","lessThan":"15.01.2308.015","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:*"],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 22","versions":[{"version":"15.0.0","status":"affected","lessThan":"15.01.2375.012","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:*"],"platforms":["x64-based Systems"]}],"references":["https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34453"],"weaknesses":[],"ingestedAt":"2026-10-29T19:48:38.863Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/34xxx/CVE-2021-34453.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-34453","state":"PUBLISHED","datePublished":"2021-10-13T00:26:37.000Z","dateUpdated":"2024-08-04T00:12:50.102Z","assignerShortName":"microsoft","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateReserved":"2021-06-09T00:00:00.000Z"},"containers":{"cna":{"title":"Microsoft Exchange Server Denial of Service Vulnerability","descriptions":[{"lang":"en-US","value":"Microsoft Exchange Server Denial of Service Vulnerability"}],"affected":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 11","versions":[{"version":"15.02.0","status":"affected","lessThan":"15.02.0986.009","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:*"],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 10","versions":[{"version":"15.02.0","status":"affected","lessThan":"15.02.0922.014","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_10:*:*:*:*:*:*"],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 21","versions":[{"version":"15.01.0","status":"affected","lessThan":"15.01.2308.015","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:*"],"platforms":["x64-based Systems"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 22","versions":[{"version":"15.0.0","status":"affected","lessThan":"15.01.2375.012","versionType":"custom"}],"cpes":["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:*"],"platforms":["x64-based Systems"]}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34453","tags":["x_refsource_MISC"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C"}}],"problemTypes":[{"descriptions":[{"description":"Denial of Service","lang":"en-US","type":"Impact"}]}],"providerMetadata":{"shortName":"microsoft","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateUpdated":"2024-05-29T14:52:09.137Z"},"datePublic":"2021-10-12T07:00:00.000Z"},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-18T20:30:38.736301Z","id":"CVE-2021-34453","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-18T20:30:48.570Z"}},{"title":"CVE Program Container","references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34453","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T00:12:50.102Z"}}]}}}