CVE-2026-45674

CRITICALNVD 10.010.0—
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 — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 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
10.0
EG Score
10.0(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

June 8, 2026

Last Modified

July 21, 2026

Advisory Details (12)

Auto-updated Jul 21, 2026
Patch available. Sources: github_release, github, redhat.
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-45674
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:41951
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:37390
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
redhat Patch Available

2488400 – (CVE-2026-45674) CVE-2026-45674 netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

https://bugzilla.redhat.com/show_bug.cgi?id=2488400
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45674.json

Vendor Advisories for CVE-2026-45674(7)

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-dns2026-07-20redhat

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 13× in last 7d / 97× 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 145 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-45674?
CVE-2026-45674 is a critical 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 21, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 86.8% of all scored CVEs.
What is the CVSS score of CVE-2026-45674?
CVE-2026-45674 has a CVSS v3 base score of 10.0 (NVD).
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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