CVE-2021-26557

    Dashboard / Vulnerabilities / CVE-2021-26557

    CVE-2021-26557

    Published: 7 Oct 2021Last Modified: 9 Jul 2026

    Summary:

    Details: 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.

    References: https://advisories.octopus.com/adv/2021-02---Local-privilege-escalation-in-Octopus-Tentacle-%28CVE-2021-26557%29.1732870264.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- fd9aeb49f65cf142eb28899520d9ed5c4246f6b2
    Fixed -ac0112c0907911fec283282ffd77e3d643ceb43d

    Affected versions

    6.0.466
    6.0.464
    6.0.463
    6.0.462
    6.0.461
    6.0.460
    6.0.486
    6.0.481
    6.0.480
    6.0.479
    6.0.478
    6.0.477
    6.0.456
    6.0.455
    6.0.454
    6.0.453
    6.0.452
    6.0.451
    6.0.450
    6.0.449
    6.0.448
    6.0.447
    6.0.446
    6.0.445
    6.0.444
    6.0.443
    6.0.440
    6.0.437
    6.0.436
    6.0.435
    6.0.426
    6.0.425
    6.0.424
    6.0.423
    6.0.409
    6.0.408
    6.0.405
    6.0.404
    6.0.403
    6.0.397
    6.0.394
    6.0.390
    6.0.389
    6.0.388
    6.0.386
    6.0.383
    6.0.381
    6.0.380
    6.0.377
    6.0.376
    6.0.375
    6.0.374
    6.0.373
    6.0.372
    6.0.371
    6.0.370
    6.0.368
    6.0.365
    6.0.364
    6.0.359
    6.0.356
    6.0.353
    6.0.352
    6.0.344
    6.0.343
    6.0.342
    6.0.341
    6.0.340
    6.0.339
    6.0.337
    6.0.334
    6.0.333
    6.0.332
    6.0.329
    6.0.325
    6.0.323
    6.0.320
    6.0.319
    6.0.317
    6.0.316
    6.0.315
    6.0.314
    6.0.313
    6.0.312
    6.0.311
    6.0.310
    6.0.309
    6.0.308
    6.0.307
    6.0.306
    6.0.304
    6.0.303
    6.0.295
    6.0.294
    6.0.291
    6.0.429

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-26557 | CVE-DB