CVE-2021-36333

Local application crash via buffer overflow

Published Nov 23, 2021 · Updated Sep 16, 2024

Buffer overflow in Dell CloudLink before 7.1.1 allows local users to cause an application crash via crafted input. Dell has not published the affected component or exact copy operation; available records identify only a buffer overflow. Local low-privilege access is required, and the documented consequence is application unavailability without reported confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Dell CloudLink before 7.1.1 allows local users to cause an application crash via crafted input. Dell has not published the affected component or exact copy operation; available records identify only a buffer overflow. Local low-privilege access is required, and the documented consequence is application unavailability without reported confidentiality or integrity impact.

The record

CVE
CVE-2021-36333
Published
Nov 23, 2021
Updated
Sep 16, 2024
Vendor
Dell
Product
CloudLink
Classifications
CWE-120, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <7.1.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Dell · CloudLinkversion=unspecified <7.1.1

Published CVSS scores

5.5DellCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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