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Vulnerabilities

Vulnerability · CVE-2001-1563

Unknown vulnerability in Tomcat 3.2.1 running on HP Secure OS for Linux 1.0 allows attackers to access servlet resources.

Published Dec 31, 2001 · catalog updated Jun 16, 2026 · Unknown vulnerability in Tomcat

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2001-1563. EPSS is 4.93%. Act only if a listed version of Unknown vulnerability in Tomcat is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Unknown vulnerability in Tomcat).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.93%
Remediation
Advisory link
Affected products
cpe apache/tomcat · cpe hp/secure os

Unknown vulnerability in Tomcat 3.2.1 running on HP Secure OS for Linux 1.0 allows attackers to access servlet resources. NOTE: due to the vagueness of the vendor advisory, it is not clear whether this issue is already covered by other CVE identifiers.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/tomcat3.2.1
  • cpe hp/secure os1.0

How to fix CVE-2001-1563

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2001-1563. EPSS is 4.93%. Act only if a listed version of Unknown vulnerability in Tomcat is installed.

Which versions are affected?

Compare what you have installed with hp/secure os 1.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 4.93%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Apache Tomcat security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 31, 2001 · Monitored products — critical

    Detected

    Unknown vulnerability in Tomcat 3.2.1 running on HP Secure OS for Linux 1.0 allows attackers to access servlet resources. NOTE: due to the vagueness of the vendor advisory, it is not clear whether this issue is already covered by other CVE identifiers.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    Unknown vulnerability in Tomcat 3.2.1 running on HP Secure OS for Linux 1.0 allows attackers to access servlet resources. NOTE: due to the vagueness of the vendor advisory, it is not clear whether this issue is already covered by other CVE identifiers.

Sources

  • FIRST EPSSExploitation probabilityCVE-2001-1563

    30-day exploitation probability 4.93%

    first.org
  • Monitored products — criticalVendor advisoryCVE-2001-1563

    Unknown vulnerability in Tomcat 3.2.1 running on HP Secure OS for Linux 1.0 allows attackers to access servlet resources. NOTE: due to the vagueness of the vendor advisory, it is not clear whether this issue is already covered by other CVE identifiers.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 3, 2026
  • Monitored products — criticalNov 3, 2026