{"id":"CVE-2023-5594","aliases":["EUVD-2023-57887","GHSA-4mwg-64w4-5g5m"],"status":"published","title":"Improper following of a certificate's chain of trust in ESET security products","description":"Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00376,"percentile":0.31819,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2023-12-21T11:30:41Z","modified":"2026-06-17T06:48:54Z","products":[{"vendor":"eset","product":"endpoint_antivirus"},{"vendor":"eset","product":"endpoint_security"},{"vendor":"eset","product":"file_security"},{"vendor":"eset","product":"internet_security"},{"vendor":"eset","product":"mail_security"},{"vendor":"eset","product":"nod32_antivirus"},{"vendor":"eset","product":"security"},{"vendor":"eset","product":"server_security"},{"vendor":"eset","product":"smart_security"},{"vendor":"eset, spol. s r.o.","product":"eset endpoint antivirus"},{"vendor":"eset, spol. s r.o.","product":"eset endpoint antivirus for linux 10.0 and above"},{"vendor":"eset, spol. s r.o.","product":"eset endpoint security"},{"vendor":"eset, spol. s r.o.","product":"eset file security for microsoft azure"},{"vendor":"eset, spol. s r.o.","product":"eset internet security"},{"vendor":"eset, spol. s r.o.","product":"eset mail security for ibm domino"},{"vendor":"eset, spol. s r.o.","product":"eset mail security for microsoft exchange server"},{"vendor":"eset, spol. s r.o.","product":"eset nod32 antivirus"},{"vendor":"eset, spol. s r.o.","product":"eset security for microsoft sharepoint server"},{"vendor":"eset, spol. s r.o.","product":"eset security ultimate"},{"vendor":"eset, spol. s r.o.","product":"eset server security for linux 10.1 and above"},{"vendor":"eset, spol. s r.o.","product":"eset server security for windows server"},{"vendor":"eset, spol. s r.o.","product":"eset smart security premium"}],"references":[{"url":"https://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-security-products-fixed","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5594"},{"url":"https://github.com/advisories/GHSA-4mwg-64w4-5g5m"}],"sources":{"cve":[{"id":"CVE-2023-5594","title":"Improper following of a certificate's chain of trust in ESET security products","description":"Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.","status":"published","published":"2023-12-21T11:30:41.256Z","modified":"2024-08-02T08:07:32.481Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:35:16.771348Z"}],"euvd":[{"id":"EUVD-2023-57887","description":"Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.","status":"published","published":"2023-12-21T11:30:41Z","modified":"2024-08-02T08:07:32Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-03T03:50:11.629738Z"}],"ghsa":[{"id":"GHSA-4mwg-64w4-5g5m","title":"Improper validation of the server’s certificate chain in secure traffic scanning feature...","description":"Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.","status":"published","published":"2023-12-21T12:30:29Z","modified":"2023-12-21T12:30:39Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:55:15.802634Z"}],"nvd":[{"id":"CVE-2023-5594","description":"Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.","status":"published","published":"2023-12-21T12:15:08.293Z","modified":"2026-06-17T06:48:54.667Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:08:57.117371Z"}]}}