CVE-2023-21250
CWE-787Published: July 13, 2023· Updated: Jun 17, 2026
Official Description
In gatt_end_operation of gatt_utils.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
Risk Analysis
Android versions 11 through 13 contain an out-of-bounds write vulnerability in the GATT utility component. This critical flaw allows for remote code execution without requiring user interaction or elevated privileges.
No public exploit is known, and the vulnerability is not in the CISA KEV. It is remotely exploitable with low complexity.
Apply the latest Android security patches provided by Google or the device manufacturer.
Technical Analysis
CVE-2023-21250 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-21250 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts