CVE catalog

CVE-2025-40779

isc-kea: CVE-2025-40779

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Aug 27, 2025, 8:23:29 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.54% · Oct 25, 2026

If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the `kea-dhcp4` process will abort with an assertion failure. This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem. This issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	isc-kea	sid	`3.0.4-2`	not affected
Debian	isc-kea	forky	`3.0.4-2`	not affected
Debian	isc-kea	trixie	`2.6.3-1+deb13u1`	not affected
Debian	isc-kea	bookworm	`2.2.0-6`	not affected
Opensuse	kea	leap 16.0	`3.0.1-160000.1.1`	fixed
Opensuse	kea	tumbleweed	`3.0.1-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	isc-kea	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	isc-kea	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	isc-kea	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	isc-kea	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Opensuse	kea	rpm	leap 16.0	`3.0.1-160000.1.1`	Not reported	OPENSUSE-SU-2026:20341-1	Not reported
Opensuse	kea	rpm	tumbleweed	`3.0.1-1.1`	Not reported	OPENSUSE-SU-2025:15499-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[kea-devel]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[kea-doc]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · noarch · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[kea-hooks]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-asiodns75]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-asiolink105]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-cc98]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-cfgrpt3]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-config98]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-cryptolink76]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-d2srv75]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-database88]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-dhcp129]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-dhcp_ddns82]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-dhcpsrv149]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-dns84]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-eval97]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-exceptions55]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-hooks139]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-http100]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed
[libkea-log86]Unknown
Source package: [kea]
Details (1)
- 3.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.0.1-1.1
  Version impact unknown
  dsa · kea · opensuse · tumbleweed

Next results

Observed: Oct 24, 2026, 7:23:25 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]