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: 1.2%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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%
EPSS PROB
1.2%
EPSS %ILE
66th
KEV
Not listed

Published

March 25, 2026

Last Modified

July 15, 2026

Advisory Details (9)

Auto-updated Jul 6, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3608.json
redhatMentions a patch (unverified)

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
redhatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-3608
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:7342
redhatMentions a patch (unverified)

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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
kea—
  • every version up to 2.6.5-r0: fixed in 2.6.5-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
kea—
  • every version up to 3.0.3-r0: fixed in 3.0.3-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
kea—
  • every version up to 3.0.3-r0: fixed in 3.0.3-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
isc-kea2.2.0-6 ... 3.0.4-2 (24 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
isc-kea2.6.3-1
  • every version up to 2.6.3-1+deb13u1: fixed in 2.6.3-1+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
isc-kea2.6.3-1 ... 3.0.3-1~bpo13+1 (7 versions)
  • every version up to 3.0.3-1: fixed in 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 / 25× 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 146 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

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 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 1.2% probability of exploitation in the next 30 days (66th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-3608?
CVE-2026-3608 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-3608?
A fix for CVE-2026-3608 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-3608 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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