CVE-2026-3608

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-03-25. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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.

Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.

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
71%
KEV
Not listed

Published

March 25, 2026

Last Modified

July 15, 2026

Advisory Details (9)

Auto-updated Jul 6, 2026
Patch available. Sources: redhat.
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3608.json
redhat Patch Available

2451139 – (CVE-2026-3608) CVE-2026-3608 Kea: Kea: Denial of Service via maliciously crafted message

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2451139
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-3608
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:7342
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:11344
generic

oss-security - ISC has disclosed one vulnerability in Kea (CVE-2026-3608)

http://www.openwall.com/lists/oss-security/2026/03/25/6
generic

CVE-2026-3608: Stack overflow in Kea daemons

https://kb.isc.org/docs/cve-2026-3608
generic

Index of /isc/kea/3.0.3

https://downloads.isc.org/isc/kea/3.0.3
generic

Index of /isc/kea/2.6.5

https://downloads.isc.org/isc/kea/2.6.5

Vendor Advisories for CVE-2026-3608(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3-kea-connector (2.6.3-2ubuntu0.1) @ questing2026-06-30ubuntu
redhatkea-0:2.6.3-2.el10_0.32026-04-28redhat
redhatkea-0:3.0.1-3.el10_12026-04-09redhat

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

(6 across 6 ecosystems)
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
kea—2.6.5-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
kea—3.0.3-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
kea—3.0.3-r0—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
isc-kea2.2.0-6 ... 3.0.4-2 (24 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
isc-kea2.6.3-12.6.3-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
isc-kea2.6.3-1 ... 3.0.3-1~bpo13+1 (7 versions)3.0.3-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

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 7× in last 7d / 26× 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 131 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. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-15 03:11 UTCEPSS rescore
  7. 2026-09-13 16:47 UTCEPSS rescore
  8. 2026-09-12 15:01 UTCEPSS rescore
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 09:37 UTCEPSS rescore
  11. 2026-09-10 09:34 UTCEPSS rescore
  12. 2026-09-08 22:00 UTCEPSS rescore
  13. 2026-09-07 16:01 UTCEPSS rescore
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-01 13:53 UTCEPSS rescore
  18. 2026-09-01 04:39 UTCEPSS rescore
  19. 2026-08-30 19:17 UTCEPSS rescore
  20. 2026-08-30 01:22 UTCEPSS rescore
  21. 2026-08-28 21:41 UTCEPSS rescore
  22. 2026-08-27 14:25 UTCEPSS rescore
  23. 2026-08-26 14:46 UTCEPSS rescore
  24. 2026-08-25 13:49 UTCEPSS rescore
  25. 2026-08-23 00:19 UTCEPSS rescore
Show 75 more
  1. 2026-08-21 23:49 UTCEPSS rescore
  2. 2026-08-20 22:55 UTCEPSS rescore
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 10:26 UTCEG score recompute
  8. 2026-08-16 10:26 UTCVendor advisory
  9. 2026-08-16 10:26 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 19:35 UTCVendor advisory
  13. 2026-08-14 19:35 UTCGHSA enrichment
  14. 2026-08-14 06:45 UTCEG score recompute
  15. 2026-08-14 06:45 UTCVendor advisory
  16. 2026-08-14 06:45 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-12 21:00 UTCEG score recompute
  19. 2026-08-12 21:00 UTCVendor advisory
  20. 2026-08-12 21:00 UTCGHSA enrichment
  21. 2026-08-12 13:51 UTCEPSS rescore
  22. 2026-08-11 21:02 UTCEG score recompute
  23. 2026-08-11 21:02 UTCVendor advisory
  24. 2026-08-11 21:01 UTCGHSA enrichment
  25. 2026-08-11 13:43 UTCEPSS rescore
  26. 2026-08-11 04:05 UTCEG score recompute
  27. 2026-08-11 04:05 UTCVendor advisory
  28. 2026-08-11 04:05 UTCGHSA enrichment
  29. 2026-08-11 00:00 UTCEPSS rescore
  30. 2026-08-10 04:23 UTCVendor advisory
  31. 2026-08-10 04:23 UTCGHSA enrichment
  32. 2026-08-09 17:22 UTCEG score recompute
  33. 2026-08-09 17:22 UTCVendor advisory
  34. 2026-08-09 17:22 UTCGHSA enrichment
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-09 06:21 UTCEG score recompute
  37. 2026-08-09 06:21 UTCVendor advisory
  38. 2026-08-09 06:21 UTCGHSA enrichment
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-08 03:39 UTCVendor advisory
  41. 2026-08-08 03:39 UTCGHSA enrichment
  42. 2026-08-07 16:39 UTCEG score recompute
  43. 2026-08-07 16:39 UTCVendor advisory
  44. 2026-08-07 16:39 UTCGHSA enrichment
  45. 2026-08-06 19:02 UTCEG score recompute
  46. 2026-08-06 19:02 UTCVendor advisory
  47. 2026-08-06 19:02 UTCGHSA enrichment
  48. 2026-08-06 13:46 UTCEPSS rescore
  49. 2026-08-06 01:06 UTCEG score recompute
  50. 2026-08-06 01:06 UTCVendor advisory
  51. 2026-08-06 01:06 UTCGHSA enrichment
  52. 2026-08-05 19:17 UTCEPSS rescore
  53. 2026-08-04 15:10 UTCEPSS rescore
  54. 2026-08-04 10:38 UTCEPSS rescore
  55. 2026-08-03 23:52 UTCEG score recompute
  56. 2026-08-03 23:52 UTCVendor advisory
  57. 2026-08-03 23:52 UTCGHSA enrichment
  58. 2026-08-03 10:36 UTCEPSS rescore
  59. 2026-08-03 02:40 UTCVendor advisory
  60. 2026-08-03 02:40 UTCGHSA enrichment
  61. 2026-08-02 15:40 UTCEG score recompute
  62. 2026-08-02 15:40 UTCVendor advisory
  63. 2026-08-02 15:40 UTCGHSA enrichment
  64. 2026-08-02 02:27 UTCEPSS rescore
  65. 2026-08-01 04:16 UTCEPSS rescore
  66. 2026-07-30 16:28 UTCEPSS rescore
  67. 2026-07-30 01:30 UTCEPSS rescore
  68. 2026-07-27 14:13 UTCEPSS rescore
  69. 2026-07-26 14:54 UTCEPSS rescore
  70. 2026-07-26 14:54 UTCEPSS rescore
  71. 2026-07-25 14:18 UTCEPSS rescore
  72. 2026-07-25 14:18 UTCEPSS rescore
  73. 2026-07-24 14:17 UTCEPSS rescore
  74. 2026-07-24 14:17 UTCEPSS rescore
  75. 2026-07-23 14:18 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-3608?
CVE-2026-3608 is a high vulnerability published on March 25, 2026. Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.
When was CVE-2026-3608 disclosed?
CVE-2026-3608 was first published in the National Vulnerability Database on March 25, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3608 actively exploited?
CVE-2026-3608 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 29.5% of all scored CVEs.
What is the CVSS score of CVE-2026-3608?
CVE-2026-3608 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-3608?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3608, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-3608

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