High severity7.5NVD Advisory· Published Aug 12, 2021· Updated Jun 17, 2026
CVE-2021-33056
CVE-2021-33056
Description
Belledonne Belle-sip before 4.5.20, as used in Linphone and other products, can crash via an invalid From header in a SIP message.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Belledonne/Belle-sipdescription
- Range: <4.5.20
Patches
Vulnerability mechanics
References
2- github.com/BelledonneCommunications/belle-sip/commit/116e3eb48fe43ea63eb9f3c4b4b30c48d58d6ff0nvdPatchThird Party Advisory
- github.com/BelledonneCommunications/belle-sip/compare/4.5.15...4.5.20nvdPatchThird Party Advisory
News mentions
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