Security readout for executives and security teams
CVE-2006-0739 is a remote denial-of-service issue in the eStara SIP softphone. A malformed SIP INVITE with an unusually long Content-Length value can crash the client. The business risk is service disruption for organizations still using this legacy softphone, especially where SIP traffic is reachable from untrusted networks. Exposure is likely limited to environments still running eStara SIP softphone. Risk increases if SIP signaling can reach the client from external, partner, or untrusted networks. The source bundle lists no specific affected versions. Treat this as a targeted legacy availability risk. Prioritize action if eStara SIP softphone is still deployed, business-critical, or reachable through exposed SIP paths. Otherwise, track as part of legacy VoIP cleanup. Mitigation focus: Inventory systems for eStara SIP softphone use.; Check vendor or archived advisory guidance for fixed versions.; Retire or replace unsupported legacy softphone installations..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CVE-2006-0739 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- estara-content-length-dos(24679)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
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