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CVE Record

CVE-2023-21250: In gatt_end_operation of gatt_utils.cc, there is a possible out of bounds write due to a missing bounds check.

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2023-21250 is an Android Bluetooth flaw that could allow remote code execution without user interaction or extra privileges. The public record names Android 11, 12, 12L, and 13 as affected. Treat unpatched managed Android devices as business risk, especially where Bluetooth exposure matters.

Executive priority

Prioritize remediation for managed Android fleets because the stated impact is remote code execution without user interaction. Urgency is lower than a confirmed exploited vulnerability, but unpatched affected devices should not remain unmanaged.

Technical view

The issue is an out-of-bounds write in gatt_end_operation in Android Bluetooth gatt_utils.cc caused by a missing bounds check. Google’s record states possible remote code execution with no additional privileges and no user interaction. The source bundle does not provide CVSS, CWE, exploit details, or a standalone workaround.

Likely exposure

Exposure is likely limited to Android 11, 12, 12L, and 13 devices that have not received the relevant July 2023 Android security update or OEM equivalent.

Exploitation context

The source bundle does not show active exploitation, and CISA KEV status is false. Public sources state remote code execution is possible, but do not provide exploitation prerequisites beyond no user interaction and no added privileges.

Researcher notes

Focus validation on Android Bluetooth module patch provenance and the referenced gatt_utils.cc fix. The bundle does not include CVSS, exploit status, or detailed preconditions, so avoid assuming more than the Android bulletin and CVE record state.

Mitigation direction

  • Apply Android security updates covering the July 2023 bulletin.
  • Confirm OEM or carrier patch availability for affected Android versions.
  • Prioritize corporate Android 11, 12, 12L, and 13 devices.
  • Check Google and device-vendor guidance for any additional mitigations.
  • Retire or isolate devices that cannot receive security updates.

Validation and detection

  • Inventory Android devices by OS version and patch level.
  • Confirm July 2023 or later Android security patch status.
  • Review MDM data for Android 11, 12, 12L, and 13 devices.
  • Track vendor advisories for device-specific bulletin mapping.
  • Document exceptions where patch status cannot be verified.
Prepared
Confidence
medium
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2023-21250 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
GoogleAndroid13, 12L, 12, 11unaffected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.