---
title: "CVE-2026-77059: boneIO Black - Privilege Escalation"
description: "boneIO Black contains a TOCTOU race condition caused by writing sudoers rules to a predictable temporary file in create_timedatectl_sudoers_file(), letting local attackers inject arbitrary sudoers rules and escalate privileges to root, exploit requires local access."
url: https://panop.io/threat-heartbeat/CVE-2026-77059/
---

# CVE-2026-77059 boneIO Black - Privilege Escalation

boneIO Black contains a TOCTOU race condition caused by writing sudoers rules to a predictable temporary file in create\_timedatectl\_sudoers\_file(), letting local attackers inject arbitrary sudoers rules and escalate privileges to root, exploit requires local access.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-77059)

## Details

Type

Privilege Escalation

Impact

Privilege Escalation

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

26 October 2026

Updated

27 October 2026

Weakness

[CWE-367](https://cwe.mitre.org/data/definitions/367.html)

## Vendor fix

Update to version 1.6.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-77059](https://nvd.nist.gov/vuln/detail/CVE-2026-77059)
- [https://cert.pl/en/posts/2026/10/CVE-2026-77052](https://cert.pl/en/posts/2026/10/CVE-2026-77052)
- [https://boneio.eu/en/docs/black](https://boneio.eu/en/docs/black)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)