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CVE-2006-0737

23
FAUCET Score

CVE-2006-0737 describes a denial-of-service vulnerability in the eStara SIP softphone, affecting version 3.0.1. An unauthenticated remote attacker can crash the application by sending a specially crafted SIP OPTIONS request containing a negative value in the Expires field. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited with low complexity over the network, leading to a denial of service. While there is an ExploitDB entry detailing multiple malformed field DoS vulnerabilities, there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.1.47CPE matchmatch criteria
cpe:2.3:a:estara:softphone:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-27211 · Feb 14, 2006
This CVE's current EPSS score of 0.0312 is in the 81st percentile among its peer group of 23,701 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/18872
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/24677
securityfocus.com / archive/1/424943/100/0/threaded
securityfocus.com / bid/16629
vupen.com / english/advisories/2006/0607