{"cve":"CVE-2023-34758","nvd":{"published":"2023-08-28T12:15:09.007","modified":"2026-06-17T06:04:00.200","status":"Modified","description":"Sliver from v1.5.x to v1.5.39 has an improper cryptographic implementation, which allows attackers to execute a man-in-the-middle attack via intercepted and crafted responses.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-327"],"references":["https://github.com/BishopFox/sliver/releases/tag/v1.5.40","https://github.com/advisories/GHSA-8jxm-xp43-qh3q","https://github.com/tangent65536/Slivjacker","https://www.chtsecurity.com/news/04f41dcc-1851-463c-93bc-551323ad8091","https://github.com/BishopFox/sliver/releases/tag/v1.5.40"],"products":["bishopfox:sliver"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-34758","score":0.00588,"percentile":0.48132,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8jxm-xp43-qh3q","url":"https://osv.dev/vulnerability/GHSA-8jxm-xp43-qh3q","summary":"Silver vulnerable to MitM attack against implants due to a cryptography vulnerability","modified":"2026-07-08T06:28:02.508775796Z","packages":[{"ecosystem":"Go","name":"github.com/bishopfox/sliver","purl":"pkg:golang/github.com/bishopfox/sliver","ranges":[">=1.5.0 <1.5.40"],"fixed":["1.5.40"]}]},{"id":"GO-2023-1866","url":"https://osv.dev/vulnerability/GO-2023-1866","summary":"Silver vulnerable to MitM attack against implants due to a cryptography vulnerability in github.com/bishopfox/sliver","modified":"2026-03-03T04:51:29.238601Z","packages":[{"ecosystem":"Go","name":"github.com/bishopfox/sliver","purl":"pkg:golang/github.com/bishopfox/sliver","ranges":[">=1.5.0 <1.5.40"],"fixed":["1.5.40"]}]}],"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."]}