CVE-2009-2732

Exp

The checkHTTPpassword function in http.c in ntop 3.3.10 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an Authorization HTTP header that lacks a : (colon) character in the base64-decoded string.

Published: 2009-08-21 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2732 is rated High Exploit Risk (69.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 7.27%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.68% 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-2009-2732

EDB-ID Source Kind Published Link
33176 exploit_db edb 2009-08-18 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-2732

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 5.59% 7.27% +1.68%
2 2026-01-23 5.01% 5.59% +0.58%
3 2025-03-30 — 5.01% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2732

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-2009-2732

OS Trackers for CVE-2009-2732

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2009-2732
ubuntu medium CVE-2009-2732 medium priority: Ubuntu including 1 source packages (ntop), 10 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 5, not-affected 4, needs-triage 1. https://ubuntu.com/security/CVE-2009-2732

Affected software / configurations for CVE-2009-2732

Vendor Product Version Raw CPE
ntop ntop <= 3.3.10 cpe:2.3:a:ntop:ntop:*:*:*:*:*:*:*:*

References for CVE-2009-2732

cvelogic Threat Intelligence