CVE-2021-37065Network attack vector

Information disclosure or service interruption via integer overflow

Published Dec 7, 2021 · Updated Aug 4, 2024

Integer overflow in Huawei HarmonyOS 2.0 allows remote attackers to disclose information or interrupt service through crafted network input. Huawei has not disclosed the affected component, arithmetic operation, or input field that reaches the overflow. The path is remotely reachable without authentication or user interaction; reported effects are limited to confidentiality loss or service interruption.

CVSS severity9.1
Critical
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Huawei HarmonyOS 2.0 allows remote attackers to disclose information or interrupt service through crafted network input. Huawei has not disclosed the affected component, arithmetic operation, or input field that reaches the overflow. The path is remotely reachable without authentication or user interaction; reported effects are limited to confidentiality loss or service interruption.

The record

CVE
CVE-2021-37065
Published
Dec 7, 2021
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 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?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0

Published CVSS scores

6.4National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:N/A:P
9.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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

CWE-190Integer Overflow or Wraparound

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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