CVE-2025-29908 - CVE House
Back to Database
Status published Medium CVE-2025-29908

Netty QUIC hash collision DoS attack

Vulnerability Description

Netty QUIC codec is a QUIC codec for netty which makes use of quiche. An issue was discovered in the codec. A hash collision vulnerability (in the hash map used to manage connections) allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This vulnerability is fixed in 0.0.71.Final.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-29908

Credits & Attribution

No credits recorded in the NVD database.

References

More from netty

View All →
CVE-2025-67735
Netty has a CRLF Injection vulnerability in io.netty.handler.codec.http.HttpRequestEncoder
Medium 6.5
CVE-2025-59419
Netty netty-codec-smtp SMTP Command Injection Vulnerability Allowing Email Forgery
Medium 5.5
CVE-2025-58057
Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack
Medium 6.9
CVE-2025-58056
Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions
Low 2.9
CVE-2025-55163
Netty MadeYouReset HTTP/2 DDoS Vulnerability
High 8.2

Affected Vendor

Affected Software

netty-incubator-codec-quic
Vulnerable Versions:
< 0.0.71.Final

Timeline

Official Publish: March 31st, 2025
Last Modified: April 1st, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-407

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.