CVE catalog

CVE-2021-25217

isc-dhcp: CVE-2021-25217

Severity: High · CVSS 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: May 26, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 6.12% · Oct 25, 2026

In ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16, ISC DHCP 4.4.0 -> 4.4.2 (Other branches of ISC DHCP (i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series) are beyond their End-of-Life (EOL) and no longer supported by ISC. From inspection it is clear that the defect is also present in releases from those series, but they have not been officially tested for the vulnerability), The outcome of encountering the defect while reading a lease that will trigger it varies, according to: the component being affected (i.e., dhclient or dhcpd) whether the package was built as a 32-bit or 64-bit binary whether the compiler flag -fstack-protection-strong was used when compiling In dhclient, ISC has not successfully reproduced the error on a 64-bit system. However, on a 32-bit system it is possible to cause dhclient to crash when reading an improper lease, which could cause network connectivity problems for an affected system due to the absence of a running DHCP client process. In dhcpd, when run in DHCPv4 or DHCPv6 mode: if the dhcpd server binary was built for a 32-bit architecture AND the -fstack-protection-strong flag was specified to the compiler, dhcpd may exit while parsing a lease file containing an objectionable lease, resulting in lack of service to clients. Additionally, the offending lease and the lease immediately following it in the lease database may be improperly deleted. if the dhcpd server binary was built for a 64-bit architecture OR if the -fstack-protection-strong compiler flag was NOT specified, the crash will not occur, but it is possible for the offending lease and the lease which immediately followed it to be improperly deleted.

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-dhcp	trixie	`4.4.3-P1-8`	fixed
Debian	isc-dhcp	bookworm	`4.4.3-P1-2`	fixed
Alpine	dhcp	3.12	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.13	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.14	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.15	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.16	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.17	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.18	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.19	`4.4.2_p1-r0`	fixed
Alpine	dhcp	3.20	`4.4.2_p1-r0`	fixed
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu2`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu8`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu11`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.6`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10+esm1`	fixed
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu2`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu8`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu11`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.6`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10+esm1`	fixed
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu3`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu4`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu5`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu6`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.1`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.3`	fixed
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu6`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu2`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu3`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu4`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.2`	fixed
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu3`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu4`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu5`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu6`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.1`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.3`	fixed
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu6`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu2`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu3`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu4`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.2`	fixed
Suse	dhcp	linux enterprise module for basesystem 15 sp2	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise module for basesystem 15 sp3	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise module for server applications 15 sp2	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise module for server applications 15 sp3	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise high performance computing 15-espos	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise high performance computing 15-ltss	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise high performance computing 15 sp1-espos	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise high performance computing 15 sp1-ltss	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise server 15-ltss	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise server 15 sp1-bcl	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise server 15 sp1-ltss	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise server for sap applications 15	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise server for sap applications 15 sp1	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	manager proxy 4.0	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	manager retail branch server 4.0	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	manager server 4.0	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	enterprise storage 6	`4.3.6.P1-6.11.1`	fixed
Opensuse	dhcp	leap 15.3	`4.3.6.P1-6.11.1`	fixed
Suse	dhcp	linux enterprise point of sale 11 sp3	`4.2.4.P2-0.28.12.1`	fixed
Suse	dhcp	linux enterprise server 11 sp4-ltss	`4.2.4.P2-0.28.12.1`	fixed
Opensuse	dhcp	leap 15.2	`4.3.6.P1-lp152.8.6.1`	fixed
Suse	dhcp	hpe helion openstack 8	`4.3.3-10.22.1`	fixed
Suse	dhcp	openstack cloud 8	`4.3.3-10.22.1`	fixed
Suse	dhcp	openstack cloud 9	`4.3.3-10.22.1`	fixed
Suse	dhcp	openstack cloud crowbar 8	`4.3.3-10.22.1`	fixed
Suse	dhcp	openstack cloud crowbar 9	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server for sap applications 12 sp3	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server for sap applications 12 sp4	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise software development kit 12 sp5	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server 12 sp2-bcl	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server 12 sp3-ltss	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server 12 sp3-bcl	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server 12 sp4-ltss	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server 12 sp5	`4.3.3-10.22.1`	fixed
Suse	dhcp	linux enterprise server for sap applications 12 sp5	`4.3.3-10.22.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	isc-dhcp	source	trixie	`4.4.1-2.3`	not yet assigned	Not reported	[989157]
Debian	isc-dhcp	source	bookworm	`4.4.1-2.3`	not yet assigned	Not reported	[989157]
Alpine	dhcp	apk	3.12	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.13	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.14	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.15	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.16	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.17	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.18	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.19	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Alpine	dhcp	apk	3.20	`4.4.2_p1-r0`	Not reported	ALPINE-CVE-2021-25217	Not reported
Ubuntu	isc-dhcp	deb	pro	`4.3.3-5ubuntu12.10+esm1`	Not reported	USN-4969-2	Not reported
Ubuntu	isc-dhcp	deb	pro	`4.3.3-5ubuntu12.10+esm1`	Not reported	UBUNTU-CVE-2021-25217	Not reported
Ubuntu	isc-dhcp	deb	18.04	`4.3.5-3ubuntu7.3`	Not reported	UBUNTU-CVE-2021-25217	Not reported
Ubuntu	isc-dhcp	deb	20.04	`4.4.1-2.1ubuntu5.20.04.2`	Not reported	UBUNTU-CVE-2021-25217	Not reported
Ubuntu	isc-dhcp	deb	18.04	`4.3.5-3ubuntu7.3`	Not reported	USN-4969-1	Not reported
Ubuntu	isc-dhcp	deb	20.04	`4.4.1-2.1ubuntu5.20.04.2`	Not reported	USN-4969-1	Not reported
Suse	dhcp	rpm	linux enterprise module for basesystem 15 sp2	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise module for basesystem 15 sp3	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise module for server applications 15 sp2	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise module for server applications 15 sp3	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise high performance computing 15-espos	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise high performance computing 15-ltss	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise high performance computing 15 sp1-espos	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise high performance computing 15 sp1-ltss	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise server 15-ltss	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise server 15 sp1-bcl	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise server 15 sp1-ltss	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise server for sap applications 15	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise server for sap applications 15 sp1	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	manager proxy 4.0	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	manager retail branch server 4.0	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	manager server 4.0	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	enterprise storage 6	`4.3.6.P1-6.11.1`	Not reported	SUSE-SU-2021:1841-1	Not reported
Opensuse	dhcp	rpm	leap 15.3	`4.3.6.P1-6.11.1`	Not reported	OPENSUSE-SU-2021:1841-1	Not reported
Suse	dhcp	rpm	linux enterprise point of sale 11 sp3	`4.2.4.P2-0.28.12.1`	Not reported	SUSE-SU-2021:14740-1	Not reported
Suse	dhcp	rpm	linux enterprise server 11 sp4-ltss	`4.2.4.P2-0.28.12.1`	Not reported	SUSE-SU-2021:14740-1	Not reported
Opensuse	dhcp	rpm	leap 15.2	`4.3.6.P1-lp152.8.6.1`	Not reported	OPENSUSE-SU-2021:0834-1	Not reported
Suse	dhcp	rpm	hpe helion openstack 8	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	openstack cloud 8	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	openstack cloud 9	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	openstack cloud crowbar 8	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	openstack cloud crowbar 9	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server for sap applications 12 sp3	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server for sap applications 12 sp4	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise software development kit 12 sp5	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server 12 sp2-bcl	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server 12 sp3-ltss	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server 12 sp3-bcl	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server 12 sp4-ltss	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server 12 sp5	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported
Suse	dhcp	rpm	linux enterprise server for sap applications 12 sp5	`4.3.3-10.22.1`	Not reported	SUSE-SU-2021:1822-1	Not reported

[Debian bug #989157]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[isc-dhcp-client]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
[isc-dhcp-client-ddns]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
[isc-dhcp-common]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
[isc-dhcp-dev]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
[isc-dhcp-relay]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
[isc-dhcp-server]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
[isc-dhcp-server-ldap]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · bookworm; dsa · isc-dhcp · debian · 12

[Debian 13 (Trixie)]

[isc-dhcp-client]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-client-ddns]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-common]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-dev]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-keama]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-relay]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-server]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
[isc-dhcp-server-ldap]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-8 · amd64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13
- 4.4.3-P1-8 · arm64 · trixie
  Fixed · Fixed: 4.4.1-2.3
  dsa · isc-dhcp · debian · 13

Observed: Oct 23, 2026, 5:55:06 PM UTC

References

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