VULNERABILITY INTELLIGENCE

CVE-2009-0641

CVSS score9.3 HIGH
EPSS probability9.32%
CISA KEVNot currently listed
Published2009-02-20
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:C/I:C/A:C

Description

sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.

Primary references