CVE-2006-0739

eStara SIP softphone allows remote attackers to cause a denial of service (crash) via an INVITE request with a Content-Length field that has more than 9 digits.

Published: 2006-02-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-0739 is rated Moderate Risk (46.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.60%). 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-2006-0739

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 0.91% 1.60% +0.68%
2 2025-03-17 1.44% 0.91% -0.53%
3 2025-01-24 — 1.44% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-0739

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-2006-0739

Affected software / configurations for CVE-2006-0739

Vendor Product Version Raw CPE
estara softphone <= 3.0.1.47 cpe:2.3:a:estara:softphone:*:*:*:*:*:*:*:*

References for CVE-2006-0739

cvelogic Threat Intelligence