Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2023-4211

Midgard GPU Kernel Driver

Arm / Midgard GPU Kernel Driver · r12p0 to <= r32p0

Watch CVE-2023-4211 Browse KEV feed
Severity
CVSS 5.5 · Medium
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
1.1%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-4211 is a vulnerability affecting Arm Midgard GPU Kernel Driver and 3 other products. A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV.

Who is affected?

Arm / Midgard GPU Kernel Driver r12p0 to <= r32p0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

Arm Ltd Affected
Midgard GPU Kernel Driver
Through r32p0
Arm Ltd Affected
Bifrost GPU Kernel Driver
Through r42p0
Arm Ltd Affected
Valhall GPU Kernel Driver
Through r42p0
Arm Ltd Affected
Arm 5th Gen GPU Architecture Kernel Driver
Through r42p0
Published
01 Oct 2023
Exploitation Reported
03 Oct 2023
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None

Tags

nessus_scanner cisa

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 03 Oct 2023

A trusted third party reported exploitation.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CISA First 2023-10-03 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nessus https://www.tenable.com/plugins/nessus/182435 02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

5.5 Medium

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

1.1%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Use After Free CWE-416

Timeline

From disclosure to observed exploitation

  1. 09:26 UTC

    Nessus plugin available

    Scanner coverage available

  2. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. 17:00 UTC

    CVE published

    Vulnerability disclosed publicly

  4. 15:24 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

Start 14-day Pro trial Read API docs
  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-4211

Sample API response 
{
  "cve_id": "CVE-2023-4211",
  "confidence": "Confirmed",
  "cvss_score": 5.5,
  "cvss_estimated": false,
  "epss_score": 0.01098,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}