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CVE-2025-55163 is the Netty-specific MadeYouReset HTTP/2 denial-of-service vulnerability. Netty versions before 4.1.124.Final in the 4.1 branch and 4.2.4.Final in the 4.2 branch improperly handle malformed HTTP/2 control frames, allowing attackers to bypass maximum concurrent-stream limits. This protocol-handling flaw permits excessive concurrent processing on a single HTTP/2 connection, resulting in resource exhaustion and denial of service.
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No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An HTTP/2 denial-of-service vulnerability affecting Netty before versions 4.1.124.Final and 4.2.4.Final. Malformed control frames bypass the maximum concurrent streams limit, causing resource exhaustion. The advisory also identifies the affected grpc-netty-shaded package and recommends updating it and related packages to version 1.75.0 or later. Exploits are available. The reported CVSS v3 base score is 7.5 and CVSS v4 base score is 8.2.
A product-specific CVE associated with the MadeYouReset HTTP/2 DoS technique affecting Netty.
A vulnerability in the Netty network application framework used by HPE Telco Service Activator, potentially leading to authentication bypass, denial-of-service, or CRLF injection.
A denial-of-service vulnerability in the Netty HTTP/2 codec (io.netty:netty-codec-http2) dependency as used by Atlassian Bamboo Data Center/Server.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.