CVE-2026-45673
June 12, 2026, 3:55 p.m.
6.8
Medium
Description
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning (Kaminsky attack). Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Netty |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-330
Use of Insufficiently Random Values
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | netty | netty | <4.1.135.Final | / | / | / | / | / | / | / |
| a | netty | netty | <4.2.15.Final | / | / | / | / | / | / | / |
| a | netty | netty | 4.1.135.Final | / | / | / | / | / | / | / |
| a | netty | netty | 4.2.15.Final | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: HIGH
- Privileges Required: NONE
- Scope: CHANGED
- Confidentiality Impact: NONE
- Integrity Impact: HIGH
- Availability Impact: NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Timeline
Published: June 12, 2026, 3:16 p.m.
Last Modified: June 12, 2026, 3:55 p.m.
Last Modified: June 12, 2026, 3:55 p.m.
Status : Undergoing Analysis
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.