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CVE-2001-1009

37
FAUCET Score

CVE-2001-1009 describes a critical vulnerability in Fetchmail (specifically versions before 5.8.17), where a malicious IMAP or POP/POP3 server can exploit a negative index number in a LIST response to overwrite arbitrary memory. This flaw carries a CVSS score of 10.0, indicating maximum severity with network-based exploitation, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While not listed on the CISA KEV catalog, public exploit code exists on ExploitDB, demonstrating its feasibility. Despite its age and high severity, there is no recorded community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.8.14CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*
4.5.1CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.1:*:*:*:*:*:*:*
4.5.2CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.2:*:*:*:*:*:*:*
4.5.3CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.3:*:*:*:*:*:*:*
4.5.4CPE matchmatch criteria
cpe:2.3:a:fetchmail:fetchmail:4.5.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.52%
Probability of exploitation in next 30 days
EPSS Percentile
93.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-21066 · Aug 9, 2001
This CVE's current EPSS score of 0.0652 is in the 88th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Linux 5.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.1
View patch

Vendor Advisories (1)

redhatCVE-2001-1009

security flaw

Aug 9, 2001

References

archives.neohapsis.com / archives/bugtraq/2001-08/0118.html
ExploitPatchVendor Advisory
distro.conectiva.com.br / atualizacoes
debian.org / security/2001/dsa-071
iss.net / security_center/static/6965.php
linux-mandrake.com / en/security/2001/MDKSA-2001-072.php3
linuxsecurity.com / advisories/other_advisory-1555.html
PatchVendor Advisory
novell.com / linux/security/advisories/2001_026_fetchmail_txt.html
redhat.com / support/errata/RHSA-2001-103.html
PatchVendor Advisory
securityfocus.com / bid/3164
ExploitPatchVendor Advisory
securityfocus.com / bid/3166
ExploitPatchVendor Advisory