5

CVE-2001-0509: microsoft exchange_server Improper Input Validation

CVSS: 5.0v2.0MediumModified
Published 29-08-2001Last modified 08-08-2024
Open JSON

Vulnerability summary

CVE-2001-0509 is a medium (CVSS 5.0) Improper Input Validation vulnerability in microsoft exchange_server. EPSS estimates a 16.98% chance of exploitation in the next 30 days, higher than 97% of scored vulnerabilities.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
16.98%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-08-2001
    PublishedVulnerability first disclosed.
  2. 08-08-2024
    Last modifiedVulnerability information updated.

Description

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 metrics

1 score · 1 source · 1 version

EPSS trend

Probability

16.98%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

0.00 pp

From 16.98% on 18-09-2026

18-09-202618-10-2026
EPSS score
16.98%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft4 products

1 vendor · 4 products

References

2 links