CVE-2021-1077

Denial of service via incorrect reference counting

Published Apr 21, 2021 · Updated Aug 3, 2024

Incorrect reference counting in NVIDIA GPU Display Driver R450 and R460 allows local users to cause a denial of service. The driver incorrectly updates the reference count used to manage an unspecified resource; NVIDIA has not disclosed the affected routine or resource. Low-privilege local access is required, and the published impact is limited to service interruption without a specified crash, hang, or reboot outcome.

CVSS severity6.6
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect reference counting in NVIDIA GPU Display Driver R450 and R460 allows local users to cause a denial of service. The driver incorrectly updates the reference count used to manage an unspecified resource; NVIDIA has not disclosed the affected routine or resource. Low-privilege local access is required, and the published impact is limited to service interruption without a specified crash, hang, or reboot outcome.

The record

CVE
CVE-2021-1077
Published
Apr 21, 2021
Updated
Aug 3, 2024
Vendor
NVIDIA
Product
NVIDIA GPU Display Driver
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 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=R450 and R460 driver branch

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

NVIDIA · NVIDIA GPU Display Driverversion=R450 and R460 driver branch

Published CVSS scores

6.6NVIDIACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

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.

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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

T1499.004Application or System Exploitation

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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