How severe is CVE-2001-1021?

CVE-2001-1021 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2001-1021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1021?

CVE-2001-1021 affects Progress Ws Ftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-1021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2001-1021 published?

CVE-2001-1021 was published on 2001-07-26 and last updated on 2026-06-16.

CVE-2001-1021

CVE-2001-1021 is a high-severity vulnerability in Progress Ws Ftp Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 42% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 42% (99th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Progress Ws Ftp Server
Published: 2001-07-26
Last modified: 2026-06-16

Description

Buffer overflows in WS_FTP 2.02 allow remote attackers to execute arbitrary code via long arguments to (1) DELE, (2) MDTM, (3) MLST, (4) MKD, (5) RMD, (6) RNFR, (7) RNTO, (8) SIZE, (9) STAT, (10) XMKD, or (11) XRMD.

Frequently asked questions

What is CVE-2001-1021?: Buffer overflows in WS_FTP 2.02 allow remote attackers to execute arbitrary code via long arguments to (1) DELE, (2) MDTM, (3) MLST, (4) MKD, (5) RMD, (6) RNFR, (7) RNTO, (8) SIZE, (9) STAT, (10) XMKD, or (11) XRMD.
How severe is CVE-2001-1021?: CVE-2001-1021 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2001-1021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1021?: CVE-2001-1021 affects Progress Ws Ftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2001-1021 published?: CVE-2001-1021 was published on 2001-07-26 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:progress:ws_ftp_server:2.0.2:*:*:*:*:*:*:*

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