Quick answers
- Is CVE-2026-124744 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124744 being exploited in the wild.
- How severe is CVE-2026-124744?
- Medium severity, with a CVSS score of 6.3, published 11 November 2026.
- Which products and versions are affected?
- BusyBox.
- Is there a fix for CVE-2026-124744?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-124744 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-124744?
- Check whether you run BusyBox. 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.
Technical details
The cpio utility in BusyBox fails to properly sanitize hardlink target paths when path traversal protection is enabled, violating CWE-59 (improper link resolution before file access). An attacker can craft a malicious archive that, when extracted by an unprivileged user, creates hardlinks to arbitrary files outside the extraction directory. Subsequent overwrite operations on those hardlinks could modify critical files, though practical exploitation requires tricking a user into extracting the archive and chaining the hardlink creation with a separate overwrite.
Affected products
- BusyBox
Timeline
- 2026-11-11: disclosed