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TI-2021-08281 Aliases CVE-2021-26557GHSA-jjvc-94pp-59jx

Untrusted search path in Octopus Tentacle

Priority LOW 34CWE-426Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-426.

Summary

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.

Why it matters now

EPSS 0.00324 25th percentileScored 2026-11-07
Fix Fixed Octopus Tentacle (Octopus Deploy): 6.0.489

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Octopus DeployOctopus Tentacle3.15.4 and later; before 6.0.4896.0.489Patch availableCNA
  • Octopus Tentacle VendorOctopus Deploy Affected 3.15.4 and later; before 6.0.489 Fixed in 6.0.489 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:octopus:tentacle:*:*:*:*:*:*:*:*3.15.4 to before 6.0.489VulnerableOctopus Deploy
  • cpe:2.3:a:octopus:tentacle:*:*:*:*:*:*:*:* Versions 3.15.4 to before 6.0.489 Vulnerable ·Octopus Deploy

Remediation

  • Fix · CNA Octopus Tentacle (Octopus Deploy) Fixed in 6.0.489

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26557
  2. 2026-10-03 Alias added: GHSA-jjvc-94pp-59jx

References

Other 1

  • TI-2021-11819 Incorrect default permissions in Octopus Tentacle CVSS 3.1HIGH 7.8
  • TI-2019-11610 In Octopus Tentacle versions 3.0.8 to 5.0.0, when a web request proxy is configured, an… CVSS 3.0MEDIUM 6.5
  • TI-2021-11818 Cleartext storage of sensitive information in Octopus Tentacle CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences