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CVE-2026-71402: CWE-125 Out-of-bounds read in SUSE wicked

0
Medium
VulnerabilityCVE-2026-71402cvecve-2026-71402cwe-125cwe-130
Published: 08/27/2026 (08/27/2026, 15:09:41 UTC)
Source: CVE Database V5
Vendor/Project: SUSE
Product: wicked

Description

An out-of-bounds read was found in the DHCPv4 packet capture code of wicked. ni_capture_inspect_udp_header() in src/capture.c reports the IP total length as the payload length instead of the length of the remaining UDP payload. Consequently, the DHCP option walker in the DHCPv4 client (wickedd-dhcp4) reads up to ihl + 8 bytes — at most 68 bytes — past the end of the 1500-byte packet receive buffer. An unauthenticated attacker on the same network who sends a crafted DHCP/UDP packet can make the client parse adjacent heap memory as DHCP options, so that heap contents such as allocator metadata or pointer values can be interpreted into lease fields. The over-read is bounded to 68 bytes; no memory write, no attacker control over the adjacent bytes and no remote exfiltration primitive has been demonstrated. This issue affects wicked up to and including version 0.6.80.

CVSS v4.0

Score 5.3medium

Attack Vector
Adjacent Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Affected software

GitHub Actionsmore threats →cve
wicked
pkg:github/wicked
Affected versions
<=0.6.80

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Data Version
5.2
Assigner Short Name
suse
Date Reserved
2026-08-06T11:38:54.896Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a906badacd9273b49839ac8

Added to database: 08/27/2026, 16:54:05 UTC

Last updated: 08/27/2026, 21:21:38 UTC

Views: 7

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