CVE-2009-0641
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.
Key facts
- CVSS score
- 9.3 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-16
- EPSS score
- 9.3% (95th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0644)
- Published
- February 20, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0644 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- freebsd / freebsd
- freebsd / freebsd
- freebsd / freebsd
- freebsd / freebsd
- freebsd / freebsd
- freebsd / freebsd
- freebsd / freebsd
- freebsd / freebsd
References
- http://lists.grok.org.uk/pipermail/full-disclosure/2009-February/067954.html(Exploit)
- http://security.freebsd.org/advisories/FreeBSD-SA-09:05.telnetd.asc(Patch)
- http://www.securityfocus.com/bid/33777(Exploit)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48780
- https://www.exploit-db.com/exploits/8055
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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