---
id: "CVE-2026-20703"
page: "https://infrastack.ai/live/CVE-2026-20703"
kind: "vulnerability"
aliases: ["CVE-2026-20703"]
title: "BigDL: protection mechanism failure lets user apps escalate privileges locally"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["bigdl", "local-compute", "package", "python"]
not_affected_if: ["single-user-machine", "version-2.4.0-or-later"]
published_at: "2026-11-10T18:17:36+00:00"
first_seen_at: "2026-11-10T18:22:56+00:00"
updated_at: "2026-11-10T18:25:14+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20703", "first_seen_at": "2026-11-10T18:22:56+00:00"}]
exploit_sources: []
---

# BigDL: protection mechanism failure lets user apps escalate privileges locally

Link for people: https://infrastack.ai/live/CVE-2026-20703 (this .md is for agents)

BigDL versions before 2.4.0 have a protection mechanism failure in user applications running in Ring 3 that can allow privilege escalation. An attacker with local access and an unprivileged foothold may be able to gain higher privileges on the affected system.

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

## How to check

- Check the installed BigDL version (for example with `pip show bigdl` or the version file in your environment); versions below `2.4.0` are in scope.

## Fix

- BigDL: move to `2.4.0` or later

## Timeline

- 2026-11-10T18:22:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-20703

## From the sources

Protection mechanism failure for some BigDL before version 2.4.0 within Ring 3: User Applications may allow an escalation of privilege. Unprivileged software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires passive user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

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