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CVE-2001-0333

86
FAUCET Score

CVE-2001-0333 describes a critical directory traversal vulnerability in Microsoft IIS 5.0 and earlier, allowing remote attackers to execute arbitrary commands. This high-severity flaw (CVSS 7.5) is easily exploitable over the network with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While not on the CISA KEV catalog, this vulnerability has a high EPSS score and FAUCET Risk Score, indicating a significant threat. Numerous public exploits exist, including Metasploit modules and multiple ExploitDB entries, and it receives considerable community discussion, highlighting its continued relevance despite its age.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
90.77%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: MS01-026 Microsoft IIS/PWS CGI Filename Double Decode Command Execution · May 15, 2001
ExploitDB: EDB-16467 · Jan 8, 2011
This CVE's current EPSS score of 0.9077 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

marc.info
docs.microsoft.com / en-us/security-updates/securitybulletins/2001/ms01-026
exchange.xforce.ibmcloud.com / vulnerabilities/6534
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1018
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1051
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A37
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A78
cert.org / advisories/CA-2001-12.html
US Government Resource
securityfocus.com / bid/2708