CVE-2021-0371

System-privileged memory disclosure via truncated NFC notification

Published Mar 10, 2021 · Updated Aug 3, 2024

Out-of-bounds read in Android 11 NFC allows local users with System execution privileges to disclose process memory without interaction. The nci_proc_rf_management_ntf function processed RF deactivation notifications without first verifying the five-byte minimum, then read deactivation-type and reason fields beyond a truncated message. Exploitation requires System execution privileges, and the resulting read is confined to memory adjacent to the malformed NFC message.

CVSS severity6.7
Medium
EPSS probability0.12%
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 read in Android 11 NFC allows local users with System execution privileges to disclose process memory without interaction. The nci_proc_rf_management_ntf function processed RF deactivation notifications without first verifying the five-byte minimum, then read deactivation-type and reason fields beyond a truncated message. Exploitation requires System execution privileges, and the resulting read is confined to memory adjacent to the malformed NFC message.

The record

CVE
CVE-2021-0371
Published
Mar 10, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-125, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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  1. Affected versionversion=Android-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android-11

Published CVSS scores

4.6NISTAV:L/AC:L/Au:N/C:P/I:P/A:P
6.7NISTCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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-125Out-of-bounds Read
T1068Exploitation for Privilege Escalation

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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