What is CVE-2021-26556?

CVE-2021-26556 is a high-severity vulnerability in Octopus Octopus_deploy, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2021-10-07.

How severe is CVE-2021-26556?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Octopus Octopus_deploy

CVE-2021-26556

When Octopus Server 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.

EPSS: 0.003 (16.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Octopus Octopus_deploy
Octopus Octopus_server
Octopus Deploy Server — versions 0.9, unspecified, 2020.5.0

Weakness classification (CWE)

CWE-426 — Untrusted Search Path

References

security@octopus.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-26556?: CVE-2021-26556 is a high-severity vulnerability in Octopus Octopus_deploy, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2021-10-07.
How severe is CVE-2021-26556?: High severity. CVSS v3 base score is 7.8 out of 10.