---
id: "CVE-2026-123269"
page: "https://infrastack.ai/live/CVE-2026-123269"
kind: "vulnerability"
aliases: ["CVE-2026-123269"]
title: "libvmdk: out-of-bounds read when parsing a crafted descriptor file"
severity: "low"
cvss: 3.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["disk-image-parsing", "forensics-tooling", "libvmdk", "package"]
not_affected_if: ["no-libvmdk-dependency", "no-untrusted-vmdk-input"]
published_at: "2026-11-06T01:17:48+00:00"
first_seen_at: "2026-11-06T01:19:01+00:00"
updated_at: "2026-11-06T01:19:22+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123269", "first_seen_at": "2026-11-06T01:19:01+00:00"}]
exploit_sources: []
---

# libvmdk: out-of-bounds read when parsing a crafted descriptor file

Link for people: https://infrastack.ai/live/CVE-2026-123269 (this .md is for agents)

libvmdk is a library for reading VMware virtual disk (VMDK) files, and its descriptor file header parser can read memory past the end of a buffer. A local attacker who supplies a crafted descriptor file can cause a crash or leak small amounts of memory.

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

## How to check

- Check whether your project or service depends on libvmdk (for example `dpkg -l | grep -i vmdk` or `rpm -qa | grep -i libvmdk`, or your package manifest).
- Look for calls to libvmdk_descriptor_file_read_header or any code that opens untrusted VMDK files.

## Fix

- Upstream patch referenced by the sources: commit 175d3fc0a0b961f362f16e7560a6169d7213e16b. No fixed release version is stated in the sources.

## Timeline

- 2026-11-06T01:19:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123269

## Documents

- [fix] Patch: github.com https://github.com/libyal/libvmdk/commit/175d3fc0a0b961f362f16e7560a6169d7213e16b

## From the sources

A vulnerability was detected in libyal libvmdk. Affected by this vulnerability is the function libvmdk_descriptor_file_read_header of the file libvmdk/libvmdk_descriptor_file.c of the component Descriptor File Parser. The manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit is now public and may be used. The patch is identified as 175d3fc0a0b961f362f16e7560a6169d7213e16b. It is best practice to apply a patch to resolve this issue.

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