CVE-2026-53131
CSIRTS triage
- What
- The system requires an Ethernet MAC header before using eth_hdr().
- Who is affected
- Users of netfilter.
- Urgency
- Remediation is urgent due to a high severity rating of 7.
- Action
- Apply patches for netfilter as soon as possible.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
Advisory coverage (1)
- highCVE-2026-53131: netfilter: require Ethernet MAC header before using eth_hdr()msrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-53131)