CVE-2021-22301

Root-only memory corruption via undisclosed buffer operation

Published Feb 5, 2021 · Updated Aug 3, 2024

Buffer overflow in Huawei Mate 30 10.0.0.203(C00E201R7P2) allows local users with root access to corrupt process memory. Huawei has not identified the affected module, the input that reaches it, or the memory-copy operation that omits the required bounds check. Root permission on the target phone is required, and the published impact is limited to the resulting overflow rather than a specified execution or service outcome.

CVSS severity6.7
Medium
EPSS probability0.22%
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 Huawei Mate 30 10.0.0.203(C00E201R7P2) allows local users with root access to corrupt process memory. Huawei has not identified the affected module, the input that reaches it, or the memory-copy operation that omits the required bounds check. Root permission on the target phone is required, and the published impact is limited to the resulting overflow rather than a specified execution or service outcome.

The record

CVE
CVE-2021-22301
Published
Feb 5, 2021
Updated
Aug 3, 2024
Vendor
MindSpore
Product
Huawei Mate 30
Classifications
CWE-120
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 5, 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=10.0.0.203(C00E201R7P2)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MindSpore · Huawei Mate 30version=10.0.0.203(C00E201R7P2)

Published CVSS scores

6.2HuaweiCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
6.7HuaweiCVSS:3.1/AV:L/AC:L/PR:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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