Quick answers
- Is CVE-2026-124747 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124747 being exploited in the wild.
- How severe is CVE-2026-124747?
- High severity, with a CVSS score of 7.5, published 10 November 2026.
- Which products and versions are affected?
- BusyBox unspecified.
- Is there a fix for CVE-2026-124747?
- 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-2026-124747 attacked?
- It is attacked over the network or from the adjacent network, in a software library.
- Am I affected by CVE-2026-124747?
- Check whether you run BusyBox 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.
Technical details
A heap-based buffer overflow exists in BusyBox's wget utility (CWE-787) when handling FTP resume operations. The vulnerability occurs because the resume offset is not validated against the server-reported file size, leading to integer calculation errors. An attacker controlling an FTP server or performing on-path network interception can craft malicious file size metadata to trigger the overflow with attacker-controlled data, potentially achieving remote code execution or denial of service.
Affected products
- BusyBox unspecified
Timeline
- 2026-11-10: disclosed