{"id":"CVE-2020-1596","aliases":["EUVD-2020-12467","GHSA-cm57-v77w-q64x"],"status":"published","title":"TLS Information Disclosure Vulnerability","description":"\u003cp\u003eA information disclosure vulnerability exists when TLS components use weak hash algorithms. An attacker who successfully exploited this vulnerability could obtain information to further compromise a users's encrypted transmission channel.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would have to conduct a man-in-the-middle attack.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how TLS components use hash algorithms.\u003c/p\u003e","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00889,"percentile":0.59768,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327"],"published":"2020-09-11T17:09:27Z","modified":"2026-06-17T03:01:49Z","products":[{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1709"},{"vendor":"microsoft","product":"windows 10 version 1709 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows 7"},{"vendor":"microsoft","product":"windows 7 service pack 1"},{"vendor":"microsoft","product":"windows 8.1"},{"vendor":"microsoft","product":"windows server 2008  service pack 2"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1 (server core installation)"},{"vendor":"microsoft","product":"windows server 2008 service pack 2"},{"vendor":"microsoft","product":"windows server 2008 service pack 2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1596","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1596"},{"url":"https://github.com/advisories/GHSA-cm57-v77w-q64x"}],"sources":{"cve":[{"id":"CVE-2020-1596","title":"TLS Information Disclosure Vulnerability","description":"\u003cp\u003eA information disclosure vulnerability exists when TLS components use weak hash algorithms. An attacker who successfully exploited this vulnerability could obtain information to further compromise a users's encrypted transmission channel.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would have to conduct a man-in-the-middle attack.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how TLS components use hash algorithms.\u003c/p\u003e","status":"published","published":"2020-09-11T17:09:27Z","modified":"2024-08-04T06:39:10.699Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:56.213477Z"}],"euvd":[{"id":"EUVD-2020-12467","description":"\u003cp\u003eA information disclosure vulnerability exists when TLS components use weak hash algorithms. An attacker who successfully exploited this vulnerability could obtain information to further compromise a users's encrypted transmission channel.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would have to conduct a man-in-the-middle attack.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how TLS components use hash algorithms.\u003c/p\u003e","status":"published","published":"2020-09-11T17:09:27Z","modified":"2024-08-04T06:39:10Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T03:08:12.086746Z"}],"ghsa":[{"id":"GHSA-cm57-v77w-q64x","title":"A information disclosure vulnerability exists when TLS components use weak hash algorithms, aka ...","description":"A information disclosure vulnerability exists when TLS components use weak hash algorithms, aka 'TLS Information Disclosure Vulnerability'.","status":"published","published":"2022-05-24T17:28:05Z","modified":"2024-01-09T05:06:01Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:55:22.44362Z"}],"nvd":[{"id":"CVE-2020-1596","description":"\u003cp\u003eA information disclosure vulnerability exists when TLS components use weak hash algorithms. An attacker who successfully exploited this vulnerability could obtain information to further compromise a users's encrypted transmission channel.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would have to conduct a man-in-the-middle attack.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how TLS components use hash algorithms.\u003c/p\u003e","status":"published","published":"2020-09-11T17:15:21.963Z","modified":"2026-06-17T03:01:49.907Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":2.9,"vector":"AV:A/AC:M/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:06:14.981587Z"}]}}