Inefficient Algorithmic Complexity in netty-incubator-codec-quic - CVE-2025-29908
Published: May 28, 2025
Vulnerability identifier: #VU109895
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-29908
CWE-ID: CWE-407
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Netty project
Affected software:
netty-incubator-codec-quic
netty-incubator-codec-quic
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a hash collision vulnerability in the hash map used to manage connections. A remote attacker can cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs)
How to mitigate CVE-2025-29908
Install updates from vendor's website.