{"cve":"CVE-2021-26557","nvd":{"published":"2021-10-07T01:15:07.057","modified":"2026-06-17T03:43:28.350","status":"Modified","description":"When Octopus Tentacle is installed using a custom folder location, folder ACLs are not set correctly and could lead to an unprivileged user using DLL side-loading to gain privileged access.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-426"],"references":["https://advisories.octopus.com/adv/2021-02---Local-privilege-escalation-in-Octopus-Tentacle-%28CVE-2021-26557%29.1732870264.html","https://advisories.octopus.com/adv/2021-02---Local-privilege-escalation-in-Octopus-Tentacle-%28CVE-2021-26557%29.1732870264.html"],"products":["octopus:tentacle"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-26557","score":0.00324,"percentile":0.25457,"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."]}