CVE-2026-3039

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-20. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

May 20, 2026

Last Modified

September 17, 2026

Advisory Details (4)

Auto-updated Jun 6, 2026
No patch confirmed yet.
generic

CVE-2026-3039: BIND 9 server memory exhaustion during GSS-API TKEY negotiation

https://kb.isc.org/docs/cve-2026-3039
generic

Index of /isc/bind9/9.21.22

https://downloads.isc.org/isc/bind9/9.21.22
generic

Index of /isc/bind9/9.20.23

https://downloads.isc.org/isc/bind9/9.20.23
generic

Index of /isc/bind9/9.18.49

https://downloads.isc.org/isc/bind9/9.18.49

Vendor Advisories for CVE-2026-3039(12)

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

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhcos-418.94.202609031320-02026-09-17redhat
ubuntudnsutils (1:9.18.39-0ubuntu0.22.04.4) @ jammy2026-09-17ubuntu
ubuntulwresd (1:9.10.3.dfsg.P4-8ubuntu1.19+esm10) @ xenial2026-09-17ubuntu
redhatrhcos-416.94.202609011112-02026-09-10redhat
redhatbind-32:9.11.4-26.P2.el7_9.212026-08-26redhat
redhatbind-32:9.16.23-18.el9_4.122026-08-19redhat
redhatbind-32:9.16.23-31.el9_6.42026-08-17redhat
redhatbind-32:9.11.36-16.el8_10.82026-06-08redhat
redhatbind9.18-32:9.18.29-14.el9_8.22026-06-08redhat
redhatbind-32:9.16.23-40.el9_8.22026-06-08redhat
redhatbind-32:9.18.33-15.el10_2.22026-06-08redhat
redhatbind9.16-32:9.16.23-0.22.el8_10.62026-06-04redhat
redhatbind-main-9.18.49-1.hum12026-05-21redhat

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

(9 across 9 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
bind—9.18.49-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
bind—9.18.49-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
bind—9.20.23-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
bind—9.20.23-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
bind—9.20.23-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
bind91:9.16.15-1 ... 1:9.16.50-1~deb11u5 (17 versions)1:9.16.50-1~deb11u6—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
bind91:9.18.12-1 ... 1:9.18.49-1~deb12u1 (16 versions)1:9.18.49-1~deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
bind91:9.20.11-4 ... 1:9.20.23-1~deb13u1~bpo12+1 (17 versions)1:9.20.23-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
bind91:9.20.11-4 ... 1:9.20.23-1~deb13u1~bpo12+1 (18 versions)1:9.20.23-1—

Weakness Classification(2)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 69× 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 339 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-3039?
CVE-2026-3039 is a high vulnerability published on May 20, 2026. BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or…
When was CVE-2026-3039 disclosed?
CVE-2026-3039 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3039 actively exploited?
CVE-2026-3039 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 37.3% of all scored CVEs.
What is the CVSS score of CVE-2026-3039?
CVE-2026-3039 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-3039?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3039, 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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