CVE-2026-45537

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

October 1, 2026

Last Seen

October 1, 2026

API

Exploited in Wild

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Ransomware Use

—

Public Exploits

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Attack Vector

—

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Critical Buffer Overflow Vulnerability in OpenSIPS (CVE-2026-45537)78.0

CVE-2026-45537 is a critical buffer overflow vulnerability in OpenSIPS, an open-source SIP server, allowing remote unauthenticated attackers to corrupt global data and alter routing behavior. The flaw exists in the construct_uri() function, which lacks bounds checking when concatenating URI componen...