CVE-2023-33896

Local service crash via unchecked buffer write

Published Jul 12, 2023 · Updated Nov 8, 2024

Out-of-bounds write in UNISOC libimpl-ril on affected Android 10 through 13 devices allows local users with System privileges to cause a crash. libimpl-ril can write data past a destination buffer because a required bounds check is absent; UNISOC has not disclosed the affected function or input. The flaw is reachable only from a local, highly privileged context, and successful exploitation interrupts service availability.

CVSS severity6.7
Medium
EPSS probability0.11%
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 libimpl-ril on affected Android 10 through 13 devices allows local users with System privileges to cause a crash. libimpl-ril can write data past a destination buffer because a required bounds check is absent; UNISOC has not disclosed the affected function or input. The flaw is reachable only from a local, highly privileged context, and successful exploitation interrupts service availability.

The record

CVE
CVE-2023-33896
Published
Jul 12, 2023
Updated
Nov 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1489
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 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.

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1489Service Stop

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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