CVE-2011-4868
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and...
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
Exploit likelihood
What each source reports
NVD Score used
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
- Record
CVE-2011-4868- CVSS 2.0
- 6.1 Medium
AV:A/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
- Record
CVE-2011-4868- Updated
- 2026-11-02
EUVDEUVD-2011-4785 No score
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
- Record
EUVD-2011-4785- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q3c7-f665-h5rw No score
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and...
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
- Record
GHSA-q3c7-f665-h5rw- Updated
- 2026-11-02
OSV No score
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
- Record
CVE-2011-4868- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-4868 No score
The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
- Record
DEBIAN-CVE-2011-4868- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10358-1 No score
dhcp-4.3.3.P1-3.1 on GA media
These are all security issues fixed in the dhcp-4.3.3.P1-3.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10358-1- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-4868 is a medium vulnerability (CVSS 6.1) in Isc Dhcp, published January 15, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.41%, the 88th percentile. Fixed in isc-dhcp 4.2.2.dfsg.1-5.
References
kb.isc.org/article/AA-00705
isc.org/software/dhcp/advisories/cve-2011-4868
deepthought.isc.org/article/AA-00595
security.gentoo.org/glsa/glsa-201301-06.xml
nvd.nist.gov/vuln/detail/CVE-2011-4868
github.com/advisories/GHSA-q3c7-f665-h5rw
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security-tracker.debian.org/tracker/CVE-2011-4868
suse.com/security/cve/CVE-2009-1892