CVE-2001-0493

Small HTTP server 2.03 allows remote attackers to cause a denial of service via a URL that contains an MS-DOS device name such as aux.

Published: 2001-06-27 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-0493 is rated Moderate Risk (46.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.63%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-0493

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.76% 1.63% +0.87%
2 2025-03-17 1.09% 0.76% -0.33%
3 2023-03-07 — 1.09% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-0493

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2001-0493

Affected software / configurations for CVE-2001-0493

Vendor Product Version Raw CPE
max_feoktistov small_http_server 2.03 cpe:2.3:a:max_feoktistov:small_http_server:2.03:*:*:*:*:*:*:*

References for CVE-2001-0493

cvelogic Threat Intelligence