CVE-2009-0641

highpriority · attend · 50EPSS 0.093 · 95 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

9.32% (95th) EPSS

CVSS 9.3 · high

Is it mine?

6 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v2.08.4highAV:N/AC:M/Au:N/C:C/I:C/A:C/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-16USprimaryCWE-264USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-8055FreeBSD 7.0-RELEASE - Telnet Daemon Privilege Escalationfunctional · exploit_db

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
freebsd freebsd= 7.0nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 7.0-releasenvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 7.0_beta4nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 7.0_relengnvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
freebsd freebsd= 7.1nvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-02-20modified 2026-06-16

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+9288 more

references (10)

External citations — patches, advisories, analysis.

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