{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T01:16:20.140","vulnerabilities":[{"cve":{"id":"CVE-2021-37706","sourceIdentifier":"security-advisories@github.com","published":"2021-12-22T18:15:07.487","lastModified":"2025-11-04T16:15:43.010","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds."},{"lang":"es","value":"PJSIP es una biblioteca de comunicación multimedia gratuita y de código abierto escrita en lenguaje C que implementa protocolos basados en estándares como SIP, SDP, RTP, STUN, TURN e ICE. En las versiones afectadas, si el mensaje STUN entrante contiene un atributo ERROR-CODE, no se comprueba la longitud del encabezado antes de llevar a cabo una operación de sustracción, resultando en un escenario de desbordamiento de enteros. Este problema afecta a todos los usuarios que usan STUN. Un actor malicioso situado en la red de la víctima puede falsificar y enviar un mensaje UDP (STUN) especialmente diseñado que podría ejecutar remotamente código arbitrario en la máquina de la víctima. Se aconseja a usuarios que actualicen lo antes posible. No se presentan soluciones 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