Quick answers
- Is CVE-2026-124741 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124741 being exploited in the wild.
- How severe is CVE-2026-124741?
- High severity, with a CVSS score of 7.6, published 11 November 2026.
- Which products and versions are affected?
- BusyBox <UNKNOWN>.
- Is there a fix for CVE-2026-124741?
- 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-2026-124741 attacked?
- It is attacked from the adjacent network, in a software library.
- Am I affected by CVE-2026-124741?
- 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
The udhcpc6 DHCPv6 client contains a stack-based buffer overflow in functions like send_d6_renew() and send_d6_release() due to improper validation of network option sizes before memory copying (CWE-787). An attacker with network access on the same link can send a crafted DHCPv6 reply to trigger the overflow, achieving arbitrary code execution or denial of service. The process typically runs with root privileges, elevating the impact.
Affected products
- BusyBox <UNKNOWN>
Timeline
- 2026-11-11: disclosed