VULNERABILITY INTELLIGENCE
CVE-2011-4539
CVSS score5 MEDIUM
EPSS probability15.22%
CISA KEVNot currently listed
Published2011-12-08
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P
Description
dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet.
Weakness classification
- CWE-20: Improper Input Validation
Primary references
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory, VDB Entry