CVE-2023-38554

Local denial of service via unchecked WCN write

Published Sep 4, 2023 · Updated Sep 30, 2024

Out-of-bounds write in the Unisoc WCN BSP driver on Android 11 through 13 allows local users to interrupt affected devices. The driver fails to validate a buffer boundary before writing, allowing local input to corrupt memory beyond the intended buffer. Low-privileged local access is required; exploitation needs no user interaction and causes an unspecified device service interruption.

CVSS severity5.5
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Unisoc WCN BSP driver on Android 11 through 13 allows local users to interrupt affected devices. The driver fails to validate a buffer boundary before writing, allowing local input to corrupt memory beyond the intended buffer. Low-privileged local access is required; exploitation needs no user interaction and causes an unspecified device service interruption.

The record

CVE
CVE-2023-38554
Published
Sep 4, 2023
Updated
Sep 30, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T0814
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NVDCVSS: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-787Out-of-bounds Write
T0814Denial 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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