Google Android 11.0/12.0/13.0 NuMediaExtractor.cpp readSampleData out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Google Android 11.0/12.0/13.0. The impacted element is the function readSampleData of the file NuMediaExtractor.cpp. Such manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2023-21127. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Google Android 11.0/12.0/13.0 (Smartphone Operating System) and classified as critical. Affected by this issue is the function readSampleData of the file NuMediaExtractor.cpp. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In readSampleData of NuMediaExtractor.cpp, there is a possible out of bounds write due to uninitialized data. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-275418191

The weakness was released 06/16/2023 as A-275418191. The advisory is shared for download at source.android.com. This vulnerability is handled as CVE-2023-21127 since 11/03/2022. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/13/2025). It is expected to see the exploit prices for this product increasing in the near future.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-25295). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/03/2022 🔍
06/15/2023 +224 days 🔍
06/16/2023 +0 days 🔍
09/13/2025 +820 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-275418191
Status: Confirmed

CVE: CVE-2023-21127 (🔍)
GCVE (CVE): GCVE-0-2023-21127
GCVE (VulDB): GCVE-100-231656
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 06/16/2023 00:05
Updated: 09/13/2025 17:07
Changes: 06/16/2023 00:05 (43), 07/14/2023 07:13 (11), 09/13/2025 17:07 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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