CVE-2021-1096

Local system crash via NULL pointer dereference

Published Jul 22, 2021 · Updated Aug 3, 2024

NULL pointer dereference in NVIDIA Windows GPU Display Driver allows local users to crash affected Windows systems through DxgkDdiEscape. The nvlddmkm.sys kernel-mode handler for DxgkDdiEscape dereferences a NULL pointer while processing an escape control call. A low-privileged local user can reach the handler without user interaction; the documented consequence is a system crash, with no confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in NVIDIA Windows GPU Display Driver allows local users to crash affected Windows systems through DxgkDdiEscape. The nvlddmkm.sys kernel-mode handler for DxgkDdiEscape dereferences a NULL pointer while processing an escape control call. A low-privileged local user can reach the handler without user interaction; the documented consequence is a system crash, with no confidentiality or integrity impact.

The record

CVE
CVE-2021-1096
Published
Jul 22, 2021
Updated
Aug 3, 2024
Vendor
NVIDIA
Product
NVIDIA GPU Display Driver
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All GPU Driver versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

NVIDIA · NVIDIA GPU Display Driverversion=All GPU Driver versions

Published CVSS scores

5.5NVIDIA CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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