Quick answers
- Is CVE-2026-77059 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77059 being exploited in the wild.
- How severe is CVE-2026-77059?
- Informational severity, published 26 October 2026.
- Which products and versions are affected?
- boneIO Black before 1.6.0.
- Is there a fix for CVE-2026-77059?
- Yes: fixed in 1.6.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-77059 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-77059?
- Check whether you run boneIO Black at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 1.6.0
Technical details
A TOCTOU (time-of-check-time-of-use) race condition exists in create_timedatectl_sudoers_file() in boneio/webui/routes/timezone_sudoers.py, where sudoers rules are written to a predictable temporary file, validated, then installed with root privileges. A local attacker can exploit the validation-to-installation window to substitute malicious content or leverage the predictable filename for symlink attacks, resulting in arbitrary sudoers rule injection and local privilege escalation.
Affected products
- boneIO Black before 1.6.0
Timeline
- 2026-10-26: disclosed