CVE-2026-124741
Busybox: stack buffer overflow in udhcpc6 send_d6_renew() and send_d6_release()
Description
A flaw was found in BusyBox. The udhcpc6 DHCPv6 client does not properly validate the size of network options sent by a server before copying them into memory. A malicious DHCPv6 server on the local network can exploit this flaw by sending a crafted reply, triggering a stack-based buffer overflow. This vulnerability could allow an attacker to achieve arbitrary code execution with root privileges or cause a denial of service (DoS) crash.
INFO
Published Date :
Nov. 11, 2026, 10:41 a.m.
Last Modified :
Nov. 11, 2026, 10:41 a.m.
Remotely Exploit :
No
Source :
redhat
Affected Products
The following products are affected by CVE-2026-124741
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update BusyBox to a patched version.
- Verify udhcpc6 client input validation.
- Restrict DHCPv6 server access.
- Monitor network traffic for anomalies.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-124741 vulnerability anywhere in the article.