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Weakness (CWE)

CWE-195: Signed to Unsigned Conversion Error

Variant Draft

The product uses a signed primitive and performs a cast to an unsigned primitive, which can produce an unexpected value if the value of the signed primitive can not be represented using an unsigned primitive.

Source: MITRE CWE-195

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  • Critical 9.1
    CVE-2026-49840

    FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing

    FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, esl_recv_event() parses Content-Length with atol() …

    signalwire freeswitch