CVE-2026-45674

HIGHPre-NVD 8.710.0▲
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 87% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — Patch released this week
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.7Exploit: NoneExposed: 0

A fix is available — apply it.

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 DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

CVSS v3
8.7
EG Score
10.0(medium)
EPSS
12.9%
KEV
Not listed

Published

June 8, 2026

Last Modified

July 6, 2026

Advisory Details (10)

Auto-updated Jul 3, 2026
Patch available. Sources: github_release, github, redhat.
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45674.json
redhat

Bug Access Denied

https://bugzilla.redhat.com/show_bug.cgi?id=2488400
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-45674
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:34608
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:26586
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:26018
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:26017
github Patch Available

DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records · Advisory · netty/netty · GitHub

https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc
github_release Patch Available

netty-4.2.15.Final

Patch available: netty/netty netty-4.2.15.Final

https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
github_release Patch Available

netty-4.1.135.Final

Patch available: netty/netty netty-4.1.135.Final

https://github.com/netty/netty/releases/tag/netty-4.1.135.Final

Vendor Advisories for CVE-2026-45674(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatnetty-resolver-dns2026-07-02redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
io.netty:netty-resolver-dns4.1.0.Beta4 ... 4.1.99.Final (147 versions)4.1.135.Final—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 59× in last 7d / 178× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 178 total refreshes for this CVE.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 13:07 UTCMITRE cvelistV5CVSS v3 → 8.7 · severity → HIGH
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 01:44 UTCEG score recompute
  5. 2026-07-06 01:44 UTCVendor advisory
  6. 2026-07-05 21:52 UTCEG score recompute
  7. 2026-07-05 21:52 UTCVendor advisory
  8. 2026-07-05 17:24 UTCEG score recompute
  9. 2026-07-05 17:24 UTCVendor advisory
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-05 00:53 UTCEG score recompute
  12. 2026-07-05 00:53 UTCVendor advisory
  13. 2026-07-04 20:06 UTCEG score recompute
  14. 2026-07-04 20:06 UTCVendor advisory
  15. 2026-07-04 14:50 UTCEG score recompute
  16. 2026-07-04 14:50 UTCVendor advisory
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-03 23:55 UTCEG score recompute
  19. 2026-07-03 23:55 UTCVendor advisory
  20. 2026-07-03 20:03 UTCEG score recompute
  21. 2026-07-03 20:03 UTCVendor advisory
  22. 2026-07-03 16:09 UTCEG score recompute
  23. 2026-07-03 16:09 UTCVendor advisory
  24. 2026-07-03 09:21 UTCEG score recompute
  25. 2026-07-03 09:21 UTCVendor advisory
Show 75 more
  1. 2026-07-03 03:18 UTCEG score recompute
  2. 2026-07-03 03:18 UTCVendor advisory
  3. 2026-07-02 23:22 UTCEG score recompute
  4. 2026-07-02 23:22 UTCVendor advisory
  5. 2026-07-02 19:28 UTCEG score recompute
  6. 2026-07-02 19:28 UTCVendor advisory
  7. 2026-07-02 15:36 UTCEG score recompute
  8. 2026-07-02 15:36 UTCVendor advisory
  9. 2026-07-02 11:23 UTCEG score recompute
  10. 2026-07-02 11:23 UTCVendor advisory
  11. 2026-07-02 07:24 UTCEG score recompute
  12. 2026-07-02 07:24 UTCVendor advisory
  13. 2026-07-02 03:21 UTCEG score recompute
  14. 2026-07-02 03:21 UTCVendor advisory
  15. 2026-07-01 23:29 UTCEG score recompute
  16. 2026-07-01 23:29 UTCVendor advisory
  17. 2026-07-01 19:37 UTCEG score recompute
  18. 2026-07-01 19:37 UTCVendor advisory
  19. 2026-07-01 15:46 UTCEG score recompute
  20. 2026-07-01 15:46 UTCVendor advisory
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-07-01 11:54 UTCEG score recompute
  23. 2026-07-01 11:54 UTCVendor advisory
  24. 2026-07-01 08:02 UTCEG score recompute
  25. 2026-07-01 08:02 UTCVendor advisory
  26. 2026-07-01 04:11 UTCEG score recompute
  27. 2026-07-01 04:11 UTCVendor advisory
  28. 2026-07-01 00:16 UTCEG score recompute
  29. 2026-07-01 00:16 UTCVendor advisory
  30. 2026-06-30 23:22 UTCEPSS rescore
  31. 2026-06-30 20:16 UTCEG score recompute
  32. 2026-06-30 20:16 UTCVendor advisory
  33. 2026-06-30 16:24 UTCEG score recompute▲ 1.30
  34. 2026-06-30 16:24 UTCVendor advisory
  35. 2026-06-30 04:33 UTCNVD updateCVSS v3 → 10 · severity → CRITICAL
  36. 2026-06-30 01:48 UTCEG score recompute
  37. 2026-06-30 01:48 UTCVendor advisory
  38. 2026-06-29 14:06 UTCEPSS rescore
  39. 2026-06-29 14:06 UTCEPSS rescore
  40. 2026-06-29 13:40 UTCEG score recompute
  41. 2026-06-29 13:40 UTCVendor advisory
  42. 2026-06-29 01:31 UTCEG score recompute
  43. 2026-06-29 01:31 UTCVendor advisory
  44. 2026-06-28 14:07 UTCEPSS rescore
  45. 2026-06-28 13:23 UTCEG score recompute
  46. 2026-06-28 13:23 UTCVendor advisory
  47. 2026-06-28 04:56 UTCEPSS rescore
  48. 2026-06-28 04:56 UTCEPSS rescore
  49. 2026-06-28 01:14 UTCEG score recompute
  50. 2026-06-28 01:14 UTCVendor advisory
  51. 2026-06-27 13:06 UTCEG score recompute
  52. 2026-06-27 13:06 UTCVendor advisory
  53. 2026-06-27 03:08 UTCEPSS rescore
  54. 2026-06-27 00:56 UTCEG score recompute
  55. 2026-06-27 00:56 UTCVendor advisory
  56. 2026-06-26 12:45 UTCEG score recompute
  57. 2026-06-26 12:45 UTCVendor advisory
  58. 2026-06-25 21:32 UTCEG score recompute
  59. 2026-06-25 21:32 UTCVendor advisory
  60. 2026-06-25 13:49 UTCEPSS rescore
  61. 2026-06-25 09:23 UTCEG score recompute
  62. 2026-06-25 09:23 UTCVendor advisory
  63. 2026-06-24 21:14 UTCEG score recompute
  64. 2026-06-24 21:14 UTCVendor advisory
  65. 2026-06-24 14:05 UTCEPSS rescore
  66. 2026-06-24 04:58 UTCEG score recompute
  67. 2026-06-24 04:58 UTCVendor advisory
  68. 2026-06-23 21:33 UTCEPSS rescore
  69. 2026-06-23 21:33 UTCEPSS rescore
  70. 2026-06-23 15:51 UTCEG score recompute
  71. 2026-06-23 15:51 UTCVendor advisory
  72. 2026-06-23 01:57 UTCEG score recompute
  73. 2026-06-23 01:57 UTCVendor advisory
  74. 2026-06-22 14:25 UTCEPSS rescore
  75. 2026-06-22 14:25 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-45674?
CVE-2026-45674 is a high vulnerability published on June 8, 2026. 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 DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
When was CVE-2026-45674 disclosed?
CVE-2026-45674 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45674 actively exploited?
CVE-2026-45674 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45674?
CVE-2026-45674 has a CVSS v4.0 base score of 8.7 (CNA self-assessment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 10.0.
How do I remediate CVE-2026-45674?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45674, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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