{"cve":"CVE-2023-2538","nvd":{"published":"2023-07-05T13:15:09.540","modified":"2026-06-17T05:52:48.370","status":"Modified","description":"A CWE-552 \"Files or Directories Accessible to External Parties” in the web interface of the Tyan S5552 BMC version 3.00 allows an unauthenticated remote attacker to retrieve the private key of the TLS certificate in use by the BMC via forced browsing. This can then be abused to perform Man-in-the-Middle (MitM) attacks against victims that access the web interface through HTTPS.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","score":4.2},"cwes":["CWE-552"],"references":["https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2023-2538/","https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2023-2538/"],"products":["tyan:s5552\\/s5552gm2nr_firmware","tyan:s5552\\/s5552gm4nr_firmware","tyan:s5552\\/s5552wgm4nr-ex_firmware","tyan:s5552\\/s5552wgm4nr_firmware"],"source":"nvd","synced_at":"2026-10-19T21:38:30.124994567+00:00"},"epss":{"cve":"CVE-2023-2538","score":0.00243,"percentile":0.15515,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}