Buffer Overflow Vulnerability in BusyBox DHCPv6 Client
CVE-2026-124741

7.6HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 6
Red Hat Hardened Images
Vendor
CVE Published:
11 November 2026

What is CVE-2026-124741?

A flaw in the BusyBox DHCPv6 client allows for improper validation of network option sizes sent by a malicious DHCPv6 server. This vulnerability can be exploited to perform a stack-based buffer overflow, potentially enabling attackers to execute arbitrary code with root privileges or cause a denial of service (DoS) crash.

References

https://access.redhat.com/security/cve/CVE-2026-124741
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2571617
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank ducanhluu for reporting this issue.
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