VYPR
High severity8.6NVD Advisory· Published Oct 25, 2021· Updated Jun 17, 2026

CVE-2021-41145

CVE-2021-41145

Description

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. FreeSWITCH prior to version 1.10.7 is susceptible to Denial of Service via SIP flooding. When flooding FreeSWITCH with SIP messages, it was observed that after a number of seconds the process was killed by the operating system due to memory exhaustion. By abusing this vulnerability, an attacker is able to crash any FreeSWITCH instance by flooding it with SIP messages, leading to Denial of Service. The attack does not require authentication and can be carried out over UDP, TCP or TLS. This issue was patched in version 1.10.7.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Signalwire/Freeswitchllm-create2 versions
    <1.10.7+ 1 more
    • (no CPE)range: <1.10.7
    • (no CPE)range: < 1.10.7

Patches

Vulnerability mechanics

References

2

News mentions

0

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