CVE-2023-40651

Local service interruption via unchecked buffer write

Published Oct 8, 2023 · Updated Sep 19, 2024

Out-of-bounds write in UNISOC urild on Android 11 through 13 allows local users to interrupt the service through crafted input. The service writes beyond a buffer because it handles input without the required bounds check; UNISOC has not disclosed the affected function or input field. Reachability requires System execution privileges, and the reported consequence is limited to local service interruption.

CVSS severity6.7
Medium
EPSS probability0.08%
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 UNISOC urild on Android 11 through 13 allows local users to interrupt the service through crafted input. The service writes beyond a buffer because it handles input without the required bounds check; UNISOC has not disclosed the affected function or input field. Reachability requires System execution privileges, and the reported consequence is limited to local service interruption.

The record

CVE
CVE-2023-40651
Published
Oct 8, 2023
Updated
Sep 19, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1642
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.7UNISOCCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1642Endpoint 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

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Your stack

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