CVE-2009-3023

highpriority · attend · 78EPSS 0.909 · 100 %ileexploit · weaponizedEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · weaponized

Likely / severe?

90.9% (100th) EPSS

CVSS 9 · high

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Buffer overflow in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 6.0 allows remote authenticated users to execute arbitrary code via a crafted NLST (NAME LIST) command that uses wildcards, leading to memory corruption, aka "IIS FTP Service RCE and DoS Vulnerability."

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–9.3

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v2.09.3criticalAV:N/AC:M/Au:N/C:C/I:C/A:Csecondary · FSTEC (BDU) RU

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USprimaryCWE-119US

exploits (4)

Public proof-of-concept and weaponised exploit code.

exploit/windows/ftp/ms09_053_ftpd_nlstMS09-053 Microsoft IIS FTP Server NLST Response Overflowweaponized · metasploit
EDB-16740Microsoft IIS FTP Server - NLST Response Overflow (MS09-053) (Metasploit)functional · exploit_db
EDB-9541Microsoft IIS 5.0/6.0 FTP Server (Windows 2000) - Remote Stack Overflowfunctional · exploit_db
EDB-9559Microsoft IIS 5.0 FTP Server (Windows 2000 SP4) - Remote Stack Overflowfunctional · exploit_db

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
ICP DAS Co. Ltd. XP-8741-Atom≤ XP-8741fstec_bduRU
Microsoft Corp Microsoft Internet Information Services≤ 5.1fstec_bduRU
Microsoft Corp Microsoft Internet Information Services≤ 6.0fstec_bduRU
Microsoft Corp Microsoft Internet Information Services≤ 5.0fstec_bduRU
microsoft internet information server5.0 → 6.0nvdUScpe:2.3:a:microsoft:internet_information_server:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2009-08-31modified 2026-06-16

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+5663 more

references (18)

External citations — patches, advisories, analysis.

scry

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