CVE-2021-37033Network attack vector

Service availability impact via MeeTime input injection

Published Nov 23, 2021 · Updated Aug 4, 2024

Injection vulnerability in Huawei EMUI 11.0.0 allows remote attackers to affect service availability via MeeTime app requests. Huawei identifies the MeeTime app as the affected component but does not publish the specific input-processing locus or injection operation. The advisory gives no authentication or interaction precondition; reported impact is limited to service availability, with no evidence of data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Injection vulnerability in Huawei EMUI 11.0.0 allows remote attackers to affect service availability via MeeTime app requests. Huawei identifies the MeeTime app as the affected component but does not publish the specific input-processing locus or injection operation. The advisory gives no authentication or interaction precondition; reported impact is limited to service availability, with no evidence of data disclosure or modification.

The record

CVE
CVE-2021-37033
Published
Nov 23, 2021
Updated
Aug 4, 2024
Vendor
MindSpore
Product
EMUI
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=11.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · EMUIversion=11.0.0

Published CVSS scores

7.5INCIBECVSS:3.1/AV:N/AC:L/PR:N/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo