Home/CVE/IIS 4.0 allows local users to bypass the "User cannot change password" policy for Windows NT by directly calling .htr pa
CVE

CVE-2002-0421

IIS 4.0 allows local users to bypass the "User cannot change password" policy for Windows NT by directly calling .htr pa

IIS 4.0 allows local users to bypass the "User cannot change password" policy for Windows NT by directly calling .htr password changing programs in the /iisadmpwd directory, including (1) aexp2.htr, (2) aexp2b.htr, (3) aexp3.htr , or (4) aexp4.htr.

MEDIUM · CVSS 5 EPSS 0.23698
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
Sigma rules1 YARA rules0

Affected Products & Versions

1

Detection Rules (IDS/IPS)

2
et-openGPL EXPLOIT /iisadmpwd/aexp2.htr accessweb-application-activity
snort-communitySERVER-IIS /iisadmpwd/aexp2.htr accessweb-application-activity
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumWow6432Node Windows NT CurrentVersion Autorun Keys Modification

Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Published to NVD12 Aug 2002 · 04:00 AM
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References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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