How severe is CVE-2001-0303?

CVE-2001-0303 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-0303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0303?

CVE-2001-0303 affects Pi3 Pi3web. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0303?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2001-0303 published?

CVE-2001-0303 was published on 2001-05-03 and last updated on 2026-06-16.

CVE-2001-0303

CVE-2001-0303 is a medium-severity vulnerability in Pi3 Pi3web with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Pi3 Pi3web
Published: 2001-05-03
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2001-0303?: 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.
How severe is CVE-2001-0303?: CVE-2001-0303 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0303?: CVE-2001-0303 affects Pi3 Pi3web. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0303 published?: CVE-2001-0303 was published on 2001-05-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:pi3:pi3web:1.0.1:*:*:*:*:*:*:*

More vulnerabilities in Pi3 Pi3web

CVE-2002-0142 — High (CVSS 7.5): CGI handler in John Roy Pi3Web for Windows 2.0 beta 1 and 2 allows remote attackers to cause a denial of service…
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CVE-2003-0276 — Medium (CVSS 5.0): Buffer overflow in Pi3Web 2.0.1 allows remote attackers to cause a denial of service (crash) and possibly execute…
CVE-2002-0433 — Medium (CVSS 5.0): Pi3Web 2.0.0 allows remote attackers to view restricted files via an HTTP request containing a "*" (wildcard or…
CVE-2001-0302 — Medium (CVSS 5.0): Buffer overflow in tstisapi.dll in Pi3Web 1.0.1 web server allows remote attackers to cause a denial of service, and…

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