Teluu

Teluu maintains PJSIP, a widely embedded open-source VoIP and multimedia communications library whose narrow product scope belies significant reach across telephony, unified communications, and IoT platforms. The vendor's vulnerability footprint skews strongly toward critical-severity outcomes, driven by memory-safety weaknesses endemic to C-based protocol implementations: out-of-bounds reads and writes, classic buffer overflows, stack-based and heap-based overflow conditions recur across the library's session initiation protocol parsing and media handling layers. The concentration of critical flaws in a supply-chain component means that a single PJSIP vulnerability can propagate to every downstream product and device that embeds the library, amplifying the remediation burden across entire product families. Defenders should maintain an inventory of applications and devices that depend on this library rather than tracking the library alone, since patching often requires downstream vendors to rebuild and re-release their products. Current exploitation activity, severity distribution, and exposure metrics are shown alongside this summary.