Netfilter — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
1
occurrences
First Seen
February 18, 2026
Last Seen
February 18, 2026

Netfilter is a technology platform tracked by ThreatCluster, appearing in 1 threat cluster built from 1 intelligence report mention.

Netfilter is a technology platform tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed February 18, 2026; most recent activity February 18, 2026.

Related Threat Clusters

  • Updates on CVE-2024-44944 and CVE-2025-39764 in Netfilter

    CVE-2024-44944, published on August 30, 2024, addresses a vulnerability in netfilter's ctnetlink that involves a helper function for calculating expect IDs. CVE-2025-39764, published on September 11, 2025, pertains to…

    2 articles · Updated February 21, 2026

Recent Intelligence Reports

  • CVE-2025-39764 netfilter: ctnetlink: remove refcounting in expectation dumpers — Api.Msrc.Microsoft · February 18, 2026

Related Entities

Frequently asked questions

What is Netfilter?

Netfilter is a technology platform tracked by ThreatCluster, appearing in 1 threat cluster built from 1 intelligence report mention.

Is Netfilter still active?

The most recent intelligence report mentioning Netfilter on ThreatCluster is dated February 18, 2026.

What is Netfilter associated with?

Across ThreatCluster reporting, Netfilter most frequently co-occurs with CVE-2025-39764, Ctnetlink.

What are the latest developments involving Netfilter?

The most significant recent cluster is “Updates on CVE-2024-44944 and CVE-2025-39764 in Netfilter” (2 articles · Updated February 21, 2026). Netfilter appears across 1 threat cluster in total, listed above with sources.

How much reporting does ThreatCluster have on Netfilter?

Netfilter appears in 1 intelligence report mention across 1 deduplicated threat cluster, aggregated from 17,000+ monitored sources.

CVSS v3.1 Breakdown