CVE-2021-26557

7.8 highEPSS 0.3%

High (7.8) in octopus tentacle. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-11-01)
CWE: CWE-426
Published: 2021-10-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

octopus:tentacle

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

Check your stack JSON