Trending
CVE-2001-0509

CVE detail

CVE-2001-0509

Vulnerabilities in RPC servers in (1) Microsoft Exchange Server 2000 and earlier, (2) Microsoft SQL Server 2000 and earlier, (3) Windows NT 4.0, and (4) Windows 2000 allow remote attackers to cause a denial of service via malformed inputs.

CVSS 5.0 · MediumBuzz score 4.01 OTX pulses

Buzz score

Why this CVE is surfacing

Buzz score total 4.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 0.0 · diversity 0.0 · KEV 0.0 · OTX 4.0 · PoC 0.0

Mention score

0.0

0 evidence mentions in the snapshot

Diversity score

0.0

0 sources across 0 categories

KEV score

0.0

No KEV entry observed

OTX score

4.0

1 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

0 source links · newest first

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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OTX pulse activity
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CVSS 7.8 · High
OTX pulse activity

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2001-0509.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:microsoft:exchange_serverSearch this product on Shodan
cpe:2.3:a:microsoft:sql_serverSearch this product on Shodan
cpe:2.3:o:microsoft:windows_2000Search this product on Shodan
cpe:2.3:a:microsoft:windows_ntSearch this product on Shodan

Exact CVE query

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Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2001-0509Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Unavailable

Published

Sep 20, 2001

Modified

Jun 16, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 2.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Access Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Access Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Authentication (Au): None. The attacker does not need to authenticate.
Confidentiality Impact (C): None. There is no impact to this security property.
Integrity Impact (I): None. There is no impact to this security property.
Availability Impact (A): Partial. There is a limited impact to this security property.

Signals

Exploitation indicators

1 stored signals · no KEV · 1 OTX pulses

OTXOTX
- author_name: Disable_Duck
- created: 2025-01-31T02:24:06.979000+00:00
- description: https://cve.mitre.org/data/refs/refmap/source-MS.html Notes This reference map lists the various references for MS and provides the associated CVE entries or candidates. It uses data from CVE version 20061101 and candidates that were active as of 2024-06-25. Note that the list of references may not be complete.
- name: CVE -CVE Reference Map for Source MS - Curios RE active candidates CVE version 20061101
- pulse_id: 679c3446de4f362fac9217f9
- tags:
- url: https://otx.alienvault.com/pulse/679c3446de4f362fac9217f9
Observed Jan 31, 2025, 2:24 AM