---
id: "CVE-2026-112061"
kind: "vulnerability"
aliases: ["CVE-2026-112061"]
title: "librtmp: malicious RTMP server can crash clients via heap over-read"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["c", "librtmp", "media-streaming", "package", "rtmpdump"]
not_affected_if: ["no-rtmp-client-use", "trusted-servers-only"]
published_at: "2026-10-18T13:16:38+00:00"
first_seen_at: "2026-10-23T21:57:15+00:00"
updated_at: "2026-10-25T04:26:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112061", "first_seen_at": "2026-10-23T21:57:15+00:00"}]
---

# librtmp: malicious RTMP server can crash clients via heap over-read

librtmp (RTMPDump) through 2.6 reads an AMF0 strict-array element count in AMFProp_Decode before checking that four bytes remain, a heap out-of-bounds read. A malicious RTMP server or man-in-the-middle can send a crafted AMF0 body to crash the client.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the application links against librtmp: `ldd` on the binary or `pkg-config --modversion librtmp` on the build host
- Look for a librtmp version of 2.6 or earlier in the installed packages (unknown fixed version in sources)

## Fix

- Upgrade librtmp past 2.6 once a fixed release is available (fixed version unknown in sources)
- Until then, only connect to trusted RTMP servers over protected networks

## Timeline

- 2026-10-23T21:57:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112061

## From the sources

librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_