Is CVE-2010-4221 actively exploited?

CVE-2010-4221 has no public evidence of in-the-wild exploitation as of 2025-04-11.

What is the CVSS score for CVE-2010-4221?

CVE-2010-4221 has a CVSS score of 10 (UNKNOWN severity). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

How do I patch CVE-2010-4221?

Patch guidance is available from proftpd security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2010-4221.

CVE-2010-4221 - remediation guidance & executive summary

Q: Which products are affected by CVE-2010-4221?

15 products: proftpd proftpd, proftpd proftpd, proftpd proftpd, proftpd proftpd, proftpd proftpd, and 10 more.

Description

Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow remote attackers to execute arbitrary code via vectors involving a TELNET IAC escape character to a (1) FTP or (2) FTPS server.

CVSS Metrics

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector: network
Access Cmplx: low
Auth: none
Confidentiality: complete
Integrity: complete
Availability: complete
Weaknesses: CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: PROFTPD
Published: 11/9/2010
Last Modified: 4/11/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

proftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpdproftpd : proftpd

Remediation Guidance

Executive Summary

View on NIST NVD