MEDIUMCVSS v3.1 4.3Vulnerability
CVE-2026-124740
A flaw was found in BusyBox's udhcpc6 DHCPv6 client. A malicious server on the local network can trigger a use-after-free condition by responding with a crafted Dynamic Host Configuration Protocol for IPv6 (DHCPv6) reply packet lacking usable address options. This issue causes the client to read stale heap memory, which can result in a Denial of Service (DoS) due to an application crash or disclose previously assigned network address data in subsequent discovery requests.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-11T23:49:45.533241+00:00
- Cvss score
- 4.3
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-11-11T23:50:18+00:00
- Score
- 4.3
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-124740
- Cvss vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- First seen by Signal
- 2026-11-11T15:41:39+00:00
- Name
- CVE-2026-124740
- Vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Published at
- 2026-11-11T12:19:47.710
- Last modified
- 2026-11-11T12:19:47.830
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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