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Public proof of conceptFix available

CVE-2021-0318

A public proof of concept exists; no exploitation attested.

  • Published2021-01-11
  • WeaknessCWE-416 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In appendEventsToCacheLocked of SensorEventConnection.cpp, there is a possible out of bounds write due to a use-after-free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-9, Android-8.1, Android-10, Android-11; Android ID: A-168211968.

Timeline

dates in UTC
  1. 2021-01-1122:15CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-0318?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-0318?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Google android
BranchAffectedFixed in
8.1= 8.1no fix published
9.0= 9.0no fix published
10.0= 10.0no fix published
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • platform/frameworks/nativeAndroidfrom 10:0 · fixed in 10:2021-01-01
  • platform/frameworks/nativeAndroidfrom 11:0 · fixed in 11:2021-01-01
  • platform/frameworks/nativeAndroidfrom 8.1:0 · fixed in 8.1:2021-01-01
  • platform/frameworks/nativeAndroidfrom 9:0 · fixed in 9:2021-01-01

Full record on NVD

Fix

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiednanopathi/frameworks_native_AOSP10_r33_CVE-2021-0318
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.8read 2026-10-23
  • NVDCVSS 2.07.2read 2026-10-23
  • NVDweakness (CWE)CWE-416, CWE-787read 2026-10-23
  • FIRST EPSSEPSS score0.3 %2026-11-03
  • PoC-in-GitHubproof of concept1read 2026-11-02
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2021-01-11
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-0318?

In appendEventsToCacheLocked of SensorEventConnection.cpp, there is a possible out of bounds write due to a use-after-free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-9, Android-8.1, Android-10, Android-11; Android ID: A-168211968.

Is CVE-2021-0318 actively exploited?

Active exploitation of CVE-2021-0318 has not been confirmed. Its EPSS score was 0.3% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-0318?

CVE-2021-0318 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record