CVE-2006-0738 — Multiple format string vulnerabilities in eStara SIP softphone allow remote attackers to cause a denial of service (hang) via SIP INVITE requests with format string specifiers in the SDP session description, as demonstrated using (1) the field name, (2) the o field (owner/creator and session identifier), or (3) the m field (media name and transport address)

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MEDIUM

Multiple format string vulnerabilities in eStara SIP softphone allow remote attackers to cause a denial of service (hang) via SIP INVITE requests with format string specifiers in the SDP session description, as demonstrated using (1) the field name, (2) the o field (owner/creator and session identifier), or (3) the m field (media name and transport address)

Published Feb 17, 2006

5.0

MEDIUM

CVSS 2.0

EPSS 3.11%

Description

Multiple format string vulnerabilities in eStara SIP softphone allow remote attackers to cause a denial of service (hang) via SIP INVITE requests with format string specifiers in the SDP session description, as demonstrated using (1) the field name, (2) the o field (owner/creator and session identifier), or (3) the m field (media name and transport address).

Affected products

Remediation

No remediation recorded yet.

Metrics

3.11% 0.03111

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.03111

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	3.11% (0.03111)	87.33th	v5 (v2026.06.15)
Jun 15, 2026	3.12% (0.03119)	86.09th	v5 (v2026.06.15)
Apr 24, 2026	6.38% (0.06382)	91.05th	v4 (v2025.03.14)
Mar 30, 2025	4.70% (0.04701)	88.34th	v4 (v2025.03.14)
Mar 29, 2025	6.17% (0.06171)	84.30th	v4 (v2025.03.14)
Mar 17, 2025	4.70% (0.04701)	88.64th	v4 (v2025.03.14)
Dec 12, 2024	3.92% (0.03922)	92.33th	v3 (v2023.03.01)
Mar 7, 2023	3.92% (0.03922)	90.61th	v3 (v2023.03.01)
Mar 6, 2023	4.48% (0.04482)	88.77th	v2 (v2022.01.01)
Apr 1, 2022	4.48% (0.04482)	87.66th	v2 (v2022.01.01)
Feb 4, 2022	4.48% (0.04482)	71.45th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (5)

http://secunia.com/advisories/18872
third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/archive/1/424943/100/0/threaded
mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/16629
vdb-entryx_refsource_BID
http://www.vupen.com/english/advisories/2006/0607
vdb-entryx_refsource_VUPEN
https://exchange.xforce.ibmcloud.com/vulnerabilities/24678
vdb-entryx_refsource_XF

Link	Providers	Tags
http://secunia.com/advisories/18872		third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/archive/1/424943/100/0/threaded		mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/16629		vdb-entryx_refsource_BID
http://www.vupen.com/english/advisories/2006/0607		vdb-entryx_refsource_VUPEN
https://exchange.xforce.ibmcloud.com/vulnerabilities/24678		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Feb 17, 2006

Updated Aug 7, 2024

Reserved Feb 16, 2006

Link CVE-2006-0738

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2006-0738

Red Hat

Severity n/a

Public date n/a

Links CVE-2006-0738