CVE-2006-0738

CVE-2006-0738 is a medium-severity vulnerability in Estara Softphone with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

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).

Frequently asked questions

What is 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).
How severe is CVE-2006-0738?
CVE-2006-0738 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0738 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0738?
CVE-2006-0738 affects Estara Softphone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0738?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0738 published?
CVE-2006-0738 was published on 2006-02-17 and last updated on 2026-06-16.

References

Affected products (1)

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