CVE-2009-1893

The configtest function in the Red Hat dhcpd init script for DHCP 3.0.1 in Red Hat Enterprise...

6.9 Medium

The configtest function in the Red Hat dhcpd init script for DHCP 3.0.1 in Red Hat Enterprise Linux (RHEL) 3 allows local users to overwrite arbitrary files via a symlink attack on an unspecified temporary file, related to the "dhcpd -t" command.

Exploit likelihood

0.60%Down 1.8 points since Feb 4, 2022

What each source reports

NVD Score used 6.9

Record: CVE-2009-1893
CVSS 2.0: 6.9 MediumAV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-59
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-1893
Updated: 2026-11-02

EUVDEUVD-2009-1888 No score

Record: EUVD-2009-1888
Updated: 2026-11-03

GitHub AdvisoriesGHSA-45mc-hh26-869m No score

The configtest function in the Red Hat dhcpd init script for DHCP 3.0.1 in Red Hat Enterprise...

Record: GHSA-45mc-hh26-869m
Weakness: CWE-59
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`dhclient` Red Hat:enterprise_linux:3::as From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp` Red Hat:enterprise_linux:3::as From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-debuginfo` Red Hat:enterprise_linux:3::as From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-devel` Red Hat:enterprise_linux:3::as From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhclient` Red Hat:enterprise_linux:3::desktop From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp` Red Hat:enterprise_linux:3::desktop From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-debuginfo` Red Hat:enterprise_linux:3::desktop From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-devel` Red Hat:enterprise_linux:3::desktop From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhclient` Red Hat:enterprise_linux:3::es From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp` Red Hat:enterprise_linux:3::es From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3

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Affected packages
Package	Affected	Fixed
`dhcp-debuginfo` Red Hat:enterprise_linux:3::es From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-devel` Red Hat:enterprise_linux:3::es From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhclient` Red Hat:enterprise_linux:3::ws From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp` Red Hat:enterprise_linux:3::ws From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-debuginfo` Red Hat:enterprise_linux:3::ws From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3
`dhcp-devel` Red Hat:enterprise_linux:3::ws From an advisory covering 2 CVEs	before 7:3.0.1-10.2_EL3	7:3.0.1-10.2_EL3

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-1893 is a medium vulnerability (CVSS 6.9) in Isc Dhcp, published July 17, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 49th percentile. No source names a fixed version.

References

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