Is CVE-2001-0421 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2001-0421, but active exploitation has not been confirmed.

Can CVE-2001-0421 be exploited remotely?

Yes. CVE-2001-0421 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2001-0421?

CVE-2001-0421 has a CVSS score of 6.4 (MEDIUM).

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MEDIUMPOC

CVE-2001-0421

NVD-CWE-OtherPublished: July 2, 2001· Updated: Jun 16, 2026

6.4

CVSS v3.1

Official Description

FTP server in Solaris 8 and earlier allows local and remote attackers to cause a core dump in the root directory, possibly with world-readable permissions, by providing a valid username with an invalid password followed by a CWD ~ command, which could release sensitive information such as shadowed passwords, or fill the disk partition.

NVD Source

Technical Analysis

CVE-2001-0421 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2001-0421. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.