Signalwire

SignalWire's vulnerability footprint centers on a small set of widely deployed telephony and real-time communications infrastructure products, most notably the Sofia-SIP library and FreeSwitch platform, which sit in the signaling path of VoIP and unified communications systems. Vulnerabilities affecting the vendor skew strongly toward critical-severity outcomes and recur through memory-safety weaknesses including out-of-bounds writes, heap buffer overflows, and integer wraparound conditions that are endemic to C-based protocol parsers and media handlers. Defenders should treat this vendor's advisories as high-priority given the criticality bias of its disclosures and the infrastructure-level role of its products in communications environments; current severity and exploitation status are shown alongside this summary.