What is CVE-2009-3976?

CVE-2009-3976 is a vulnerability in Labtam-Inc Proftp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-11-18.

Is CVE-2009-3976 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Labtam-Inc Proftp

CVE-2009-3976

Buffer overflow in Labtam ProFTP 2.9 allows remote FTP servers to cause a denial of service (application crash) or execute arbitrary code via a long 220 reply (aka connection greeting or welcome message).

Vulnerability class: Buffer Overflow

Published 2009-11-18 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.283 (98.1th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.283 · newest: 0.283 · change: 0.000

Affected products

Labtam-Inc Proftp — versions 2.9

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

rapid7/metasploit-framework

References

www.securityfocus.com/bid/36128 (Exploit, vdb-entry)
exchange.xforce.ibmcloud.com/vulnerabilities/52730 (vdb-entry)
www.exploit-db.com/exploits/9508 (exploit)
www.vupen.com/english/advisories/2009/2414 (vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2009-3976?: CVE-2009-3976 is a vulnerability in Labtam-Inc Proftp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2009-11-18.
Is CVE-2009-3976 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.