Is CVE-2005-0277 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2005-0277, but active exploitation has not been confirmed.

Can CVE-2005-0277 be exploited remotely?

Yes. CVE-2005-0277 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2005-0277?

CVE-2005-0277 has a CVSS score of 5.0 (MEDIUM).

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MEDIUMPOC

CVE-2005-0277

NVD-CWE-OtherPublished: May 2, 2005· Updated: Jun 16, 2026

5.0

CVSS v3.1

Official Description

Buffer overflow in the FTP service in 3Com 3CDaemon 2.0 revision 10 allows remote attackers to cause a denial of service (application crash) and execute arbitrary code via (1) a long username in the USER command or (2) an FTP command that contains a long argument, such as cd, send, or ls.

NVD Source

Technical Analysis

CVE-2005-0277 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-2005-0277. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.