CVE-2006-0956

nuauth in NuFW before 1.0.21 does not properly handle blocking TLS sockets, which allows remote authenticated users to cause a denial of service (service hang) by flooding packets at the authentication server.

Published: 2006-03-02 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-0956 is rated Low Risk (22.1/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.23%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2006-0956

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 2025-03-17 0.27% 0.23% -0.04%
2 2024-12-17 0.36% 0.27% -0.09%
3 2023-03-07 — 0.36% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-0956

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
1.7 2.0 LOW
AV:L/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.1 2.9 [email protected]

Weakness enumeration for CVE-2006-0956

OS Trackers for CVE-2006-0956

vendor priority summary link
ubuntu medium CVE-2006-0956 medium priority: Ubuntu including 1 source packages (nufw), 9 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): released 7, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2006-0956

NVD evaluator notes for CVE-2006-0956

Solution: This vulnerability affects NuFW, NuFW Firewall versions 1.0.20 and previous.

Affected software / configurations for CVE-2006-0956

Vendor Product Version Raw CPE
nufw nufw_firewall 1.0.20 cpe:2.3:a:nufw:nufw_firewall:1.0.20:*:*:*:*:*:*:*

References for CVE-2006-0956

cvelogic Threat Intelligence