Which products and versions are affected by CVE-2001-0136?

Affected: Proftpd versions 1.2.0-rc2; Linux (Conectiva); Debian Linux versions 2.2, among others. The full list is in the CVE brief.

Is CVE-2001-0136 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2001-0136 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2001-0136?

Public exploit code is available.

Is there a fix for CVE-2001-0136?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2001-0136 be patched?

Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

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CVE-2001-0136Proftpd Vulnerability

Memory leak in ProFTPd 1.2.0rc2 allows remote attackers to cause a denial of service via a series of USER commands, and possibly SIZE commands if the server has been improperly installed.

Published Mar 12, 2001 · Updated Apr 15, 2026

Key Facts

Routine patching

CVE-2001-0136 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Proftpd, Linux (Conectiva), Debian Linux and 1 more product.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 45% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Scores

CVSS v2

5.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS (30-day exploit likelihood)

45%

Higher than 98.7% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

43/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

advisoryproftpd-size-memory-leak(5801)
advisoryDSA-029

Description

Memory leak in ProFTPd 1.2.0rc2 allows remote attackers to cause a denial of service via a series of USER commands, and possibly SIZE commands if the server has been improperly installed.

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
ProftpdProftpd	1.2.0-rc2	n/a
LinuxConectiva	See advisory	n/a
Debian LinuxDebian	2.2	n/a
Mandrake LinuxMandrakesoft	7.2	n/a

Timeline

Publicly disclosed
Mar 12, 2001
Last updated
Apr 15, 2026

Weakness Type

CWE-401 Missing Release of Memory after Effective Lifetime

References

advisoryproftpd-size-memory-leak(5801)
advisoryDSA-029
exploit20010109 Memory leakage in ProFTPd leads to remote DoS (SIZE FTP); (Exploit Code)
exploitExploitDB-20536
exploitExploitDB-241

6 more references in the full CVE brief

FAQ

Common Questions.

Memory leak in ProFTPd 1.2.0rc2 allows remote attackers to cause a denial of service via a series of USER commands, and possibly SIZE commands if the server has been improperly installed.
Affected: Proftpd versions 1.2.0-rc2; Linux (Conectiva); Debian Linux versions 2.2, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Is CVE-2001-0136 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.