---
id: "CVE-2026-39456"
page: "https://infrastack.ai/live/CVE-2026-39456"
kind: "vulnerability"
aliases: ["CVE-2026-39456"]
title: "Media Transcode Accelerator: bad input validation lets local users crash the system"
severity: "medium"
cvss: 5.6
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "media-transcode-accelerator"]
not_affected_if: ["already-on-1.0.0-00128-or-later"]
published_at: "2026-11-10T17:17:42+00:00"
first_seen_at: "2026-11-10T17:22:42+00:00"
updated_at: "2026-11-10T17:24:25+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39456", "first_seen_at": "2026-11-10T17:22:42+00:00"}]
exploit_sources: []
---

# Media Transcode Accelerator: bad input validation lets local users crash the system

Link for people: https://infrastack.ai/live/CVE-2026-39456 (this .md is for agents)

Media Transcode Accelerator versions before 1.0.0-00128 do not validate input properly from Ring 3 user applications. A privileged local user can trigger a denial of service that takes the affected system down.

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

## How to check

- Check the installed Media Transcode Accelerator version against the fixed version `1.0.0-00128`

## Fix

- Move Media Transcode Accelerator to `1.0.0-00128` or later

## Timeline

- 2026-11-10T17:22:42+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-39456

## From the sources

Improper input validation for some Media Transcode Accelerator before version 1.0.0-00128 within Ring 3: User Applications may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_