CVE-2001-0647

Exp

Orange Web Server 2.1, based on GoAhead, allows a remote attacker to perform a denial of service via an HTTP GET request that does not include the HTTP version.

Published: 2001-08-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-0647 is rated High Exploit Risk (68.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.21%, 91th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.82% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2001-0647

EDB-ID Source Kind Published Link
20655 exploit_db edb 2001-02-27 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2001-0647

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 3.39% 5.21% +1.82%
2 2025-03-30 4.47% 3.39% -1.08%
3 2025-03-29 — 4.47% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-0647

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-2001-0647

Affected software / configurations for CVE-2001-0647

Vendor Product Version Raw CPE
orange_software orange_web_server 2.1 cpe:2.3:a:orange_software:orange_web_server:2.1:*:*:*:*:*:*:*

References for CVE-2001-0647

cvelogic Threat Intelligence