by Kastro
Paper/Archive/CVE-2026-77055

CVE-2026-77055

boneIO black_debian_images — Improper Privilege Assignment in boneIO

EPSS 0.1%CVSS 9.3
critical.is priorityof 100
28
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 0.5.005 × 200.1No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

boneIO black_debian_images gives the boneio service account excessive privileges, including full passwordless sudo access and membership in the docker group. A local attacker who compromises the boneio user can use these privileges to escalate to root. This issue was fixed in version 1.6.0: the image removes the sudoers rule and the docker group membership when it is sealed, and devices already in the field have both removed by migrations shipped with boneio 1.6.0 and applied on first start after the upgrade. Privileged operations now go through helpers that accept only a fixed set of commands, with migrations verified against Ed25519 signatures.

Affected

ProductAffectedFixed inSource
black_debian_images1.2.0 – < 1.6.01.6.0CNA

Scores by source

CERT-PL (CNA)9.3CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References

writeupcert.pl/en/posts/2026/10/CVE-2026-77052refboneio.eu/en/docs/black