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CVE-2026-45673

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:74636648ded1e13bebb2faacadf59b32a8fbf628d852e66655609898445f5435
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-340","description":"CWE-340: Generation of Predictable Numbers or Identifiers","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"netty","vendor":"netty","versions":[{"status":"affected","version":">= 4.2.0.Final, < 4.2.15.Final"},{"status":"affected","version":"< 4.1.135.Final"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-340","description":"CWE-340: Generation of Predictable Numbers or Identifiers","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/netty/netty/releases/tag/netty-4.1.135.Final","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/references/1
{"name":"https://github.com/netty/netty/releases/tag/netty-4.2.15.Final","tags":["x_refsource_MISC"],"url":"https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/references/2
{"name":"https://github.com/netty/netty/security/advisories/GHSA-xmv7-r254-6q78","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netty/netty/security/advisories/GHSA-xmv7-r254-6q78"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dab8c7238b28a758491397fc4ddded80dae0a7f68a1ff9e7e5e192c7c3005e5a · sha256:13e01f57a5958cf2… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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