CVE-2026-3608— Stack overflow in Kea daemons
Quick assessment
Affected
ISC Kea
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ISC Kea是ISC组织的一个现代开源 DHCPv4 和 DHCPv6 服务器。 ISC Kea 2.6.0至2.6.4版本和3.0.0至3.0.2版本存在安全漏洞，该漏洞源于特制消息可能导致栈溢出错误。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-3608
Vulnerability Information
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Vulnerability Title
Stack overflow in Kea daemons
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
ISC Kea 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ISC Kea是ISC组织的一个现代开源 DHCPv4 和 DHCPv6 服务器。 ISC Kea 2.6.0至2.6.4版本和3.0.0至3.0.2版本存在安全漏洞，该漏洞源于特制消息可能导致栈溢出错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-3608
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-3608 (1)
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CVE-2026-3608: Stack overflow in Kea daemons vendor-advisory
Vendor Pages for CVE-2026-3608 (2)
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Index of /isc/kea/2.6.5 patch
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Index of /isc/kea/3.0.3 patch
Same Patch Batch · ISC · 2026-03-25 · 5 CVEs total
| CVE-2026-3104 | 7.5 HIGH | Memory leak in code preparing DNSSEC proofs of non-existence |
| CVE-2026-1519 | 7.5 HIGH | Excessive NSEC3 iterations cause high CPU load during insecure delegation validation |
| CVE-2026-3119 | 6.5 MEDIUM | Authenticated query containing a TKEY record may cause named to terminate unexpectedly |
| CVE-2026-3591 | 5.4 MEDIUM | A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass |
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V. Comments for CVE-2026-3608
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