HOME VULNERABILITIESCVE-2001-1009

CRITICALPOC

CVE-2001-1009

CWE-264Published: August 31, 2001· Updated: Jun 16, 2026

10.0

CVSS v3.1

Official Description

Fetchmail (aka fetchmail-ssl) before 5.8.17 allows a remote malicious (1) IMAP server or (2) POP/POP3 server to overwrite arbitrary memory and possibly gain privileges via a negative index number as part of a response to a LIST request.

Technical Analysis

CVE-2001-1009 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-2001-1009. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.

User Interaction

Scope

Impact

ConfidentialityC

IntegrityC

AvailabilityC

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

Affected Vendors & Products

fetchmail1 product(s)

fetchmail

Source: NVD CPE · 71 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://archives.neohapsis.com/archives/bugtraq/2001-08/0118.html

PATCHhttp://www.linuxsecurity.com/advisories/other_advisory-1555.html

PATCHhttp://www.redhat.com/support/errata/RHSA-2001-103.html

PATCHhttp://www.securityfocus.com/bid/3164

PATCHhttp://www.securityfocus.com/bid/3166

PATCHhttp://archives.neohapsis.com/archives/bugtraq/2001-08/0118.html

PATCHhttp://www.linuxsecurity.com/advisories/other_advisory-1555.html

PATCHhttp://www.redhat.com/support/errata/RHSA-2001-103.html

PATCHhttp://www.securityfocus.com/bid/3164

PATCHhttp://www.securityfocus.com/bid/3166

All References (20)

→

http://archives.neohapsis.com/archives/bugtraq/2001-08/0118.htmlExploit · Patch · Vendor Advisory

→

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000419

→

http://www.debian.org/security/2001/dsa-071

→

http://www.iss.net/security_center/static/6965.php

→

http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-072.php3

→

http://www.linuxsecurity.com/advisories/other_advisory-1555.htmlPatch · Vendor Advisory

→

http://www.novell.com/linux/security/advisories/2001_026_fetchmail_txt.html

→

http://www.redhat.com/support/errata/RHSA-2001-103.htmlPatch · Vendor Advisory

→

http://www.securityfocus.com/bid/3164Exploit · Patch · Vendor Advisory

→

http://www.securityfocus.com/bid/3166Exploit · Patch · Vendor Advisory

→

http://archives.neohapsis.com/archives/bugtraq/2001-08/0118.htmlExploit · Patch · Vendor Advisory

→

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000419

→

http://www.debian.org/security/2001/dsa-071

→

http://www.iss.net/security_center/static/6965.php

→

http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-072.php3

Quick Facts

CVE IDCVE-2001-1009

CVSS Score10.0 / 10

SeverityCRITICAL

WeaknessCWE-264

CISA KEVNo

ExploitPOC

Affected1 vendor(s)

PublishedAug 31, 2001

Related CVEs (CWE-264)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2001-1009 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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