CVE-2026-14258

A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-14258
https://bugzilla.redhat.com/show_bug.cgi?id=2462305
https://github.com/NetworkConfiguration/dhcpcd/commit/75289ca
https://github.com/NetworkConfiguration/dhcpcd/issues/415
https://github.com/NetworkConfiguration/dhcpcd/issues/415

Configurations

No configuration.

History

01 Jul 2026, 13:16

Type	Values Removed	Values Added
References	~~() https://github.com/NetworkConfiguration/dhcpcd/issues/415 -~~	() https://github.com/NetworkConfiguration/dhcpcd/issues/415 -

01 Jul 2026, 11:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 11:16

Updated : 2026-07-01 18:31

NVD link : CVE-2026-14258

Mitre link : CVE-2026-14258

CVE.ORG link : CVE-2026-14258

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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