CVE•Published 2026-06-11•Modified 2026-07-30•1 article on news•5 live references•NVD data
CVE-2026-44249Netty · Netty
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
44
Exploit Prediction Scoring System · top 56% of all CVEs
Weaknesses (CWE)
Description
Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Timeline
Published 2026-06-11
Modified 2026-07-30
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-44249Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Netty Netty"All exposed Netty Netty instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Netty"HTTP body or banner mentions "Netty" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-44249Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-44249Censys host search filtered to this CVE id.
grep.app
CVE-2026-44249Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-44249GitHub code search for direct mentions.
Google dork
"CVE-2026-44249" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.