CVE-2009-0641: n/a vulnerability

CVE-2009-0641: sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 04:40 UTC (UTC+00:00)

Security readout for executives and security teams

A legacy FreeBSD telnet daemon could mishandle dangerous environment variables sent by a remote telnet client. On affected FreeBSD 7.x systems with telnetd exposed, this could lead to arbitrary code execution. The bundle does not provide CVSS scoring or current exploitation evidence. Exposure is most likely on FreeBSD 7.0-RELEASE or other 7.x systems running telnetd and accepting network logins. Systems without telnetd enabled or without reachable telnet service have materially lower exposure. Prioritize remediation if any FreeBSD 7.x telnet service remains reachable. The business risk is high because the issue concerns remote code execution in an obsolete remote access service, even though current exploitation is not proven here. Mitigation focus: Apply the FreeBSD-SA-09:05 vendor guidance or supported FreeBSD updates.; Disable telnetd where it is not strictly required.; Restrict telnet access to trusted management networks only..

Prepared: Jun 28, 2026, 11:23 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 18, 2009, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
freebsd-telnet-ldpreload-code-execution(48780)CVE reference · vdb-entry, x_refsource_XF
8055CVE reference · exploit, x_refsource_EXPLOIT-DB

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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