CVE-2021-37049Network attack vector

Memory corruption via undisclosed heap buffer overflow

Published Dec 8, 2021 · Updated Aug 4, 2024

Heap-based buffer overflow in Huawei HarmonyOS 2.0 and EMUI 10.1.1 and 11.0.0 allows remote attackers to overwrite adjacent heap objects. Huawei has not published the affected component, attacker-controlled input, or erroneous operation that overruns the heap allocation. NVD identifies a network-accessible, unauthenticated path, but the disclosed consequence is bounded to adjacent-object memory corruption.

CVSS severity9.8
Critical
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Huawei HarmonyOS 2.0 and EMUI 10.1.1 and 11.0.0 allows remote attackers to overwrite adjacent heap objects. Huawei has not published the affected component, attacker-controlled input, or erroneous operation that overruns the heap allocation. NVD identifies a network-accessible, unauthenticated path, but the disclosed consequence is bounded to adjacent-object memory corruption.

The record

CVE
CVE-2021-37049
Published
Dec 8, 2021
Updated
Aug 4, 2024
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 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

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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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · HarmonyOSversion=2.0
MindSpore · EMUIversion=10.1.1; version=11.0.0

Published CVSS scores

7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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