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CVE-2001-0303· NVD / CVE Program· CNA mitre

tstisapi.dll in Pi3Web 1.0.1 web server allows remote attackers to determine the physical path of the server via a URL that requests a non-e

tstisapi.dll in Pi3Web 1.0.1 web server allows remote attackers to determine the physical path of the server via a URL that requests a non-existent file.

MediumCVSS 5.0 · v2.0—No exploit No fix recorded
Published
May 3, 2001
Updated
Jun 16, 2026
EPSS
1.5% · 73th percentile
CWE
—
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Report tools

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Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.5%

Affected systems

VendorProduct
pi3pi3web

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • pi3 pi3web1.0.1

Same product

pi3: all records

Other highest-scoring records for the same primary product.

  • CVE-2002-0142CGI handler in John Roy Pi3Web for Windows 2.0 beta 1 and 2 allows remote attackers to cause a denial of service (crash) via a series of req
    31Monitor
  • CVE-2003-0276Buffer overflow in Pi3Web 2.0.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a GET r
    23Monitor
  • CVE-2001-0302Buffer overflow in tstisapi.dll in Pi3Web 1.0.1 web server allows remote attackers to cause a denial of service, and possibly execute arbitr
    22Monitor
  • CVE-2003-1032Pi3Web web server 2.0.2 Beta 1, when the Directory Index is configured to use the "Name" column and sort using the column title as a hyperli
    21Monitor
  • CVE-2002-0433Pi3Web 2.0.0 allows remote attackers to view restricted files via an HTTP request containing a "*" (wildcard or asterisk) character.
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
none
Availability
none
Attack complexity
Low
Confidentiality impact
P
Integrity impact
None
Availability impact
None

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

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