# CVE-2026-71401

## Summary

- **CVE ID:** CVE-2026-71401
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-191
- **Published:** Aug 27, 2026
- **Last Modified:** Aug 27, 2026

## Description

An integer underflow was found in the DHCPv4 packet capture code of wicked. ni_capture_inspect_udp_header() in src/capture.c does not verify that the IP total length field (ip_len) is at least as large as the IP header length (ihl) before subtracting the header length. An unauthenticated attacker on the same network can thereby trigger an out-of-bounds read past the receive buffer in the wicked DHCPv4 client (wickedd-dhcp4), which can crash the daemon depending on the process memory layout. No information disclosure has been demonstrated. This issue affects wicked up to and including version 0.6.80.

## Affected Products

- SUSE — wicked (0)

## References

- [CNA](https://bugzilla.suse.com/show_bug.cgi?id=1274627)
- [CNA](https://github.com/openSUSE/wicked/pull/1079)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._