CVE-2021-39655

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

9.8 CriticalFix available

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.47%Up 0.1 points since Dec 16, 2021

What each source reports

NVD Score used 9.8

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

Record: CVE-2021-39655
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

Record: CVE-2021-39655
Updated: 2026-11-02

EUVDEUVD-2021-26012 No score

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

Record: EUVD-2021-26012
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xf3r-x9j5-vv92 9.8

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

Product: AndroidVersions: Android kernelAndroid ID: A-192641593References: N/A

Record: GHSA-xf3r-x9j5-vv92
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269
Updated: 2026-11-02

Affected products

google android

Affected packages

Affected packages
Package	Affected	Fixed
`:unknown:` Android	Pixel-family specific:0 up to Pixel-family specific:2021-12-05, plus listed versions Pixel-family specific	Pixel-family specific:2021-12-05

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-39655 is a critical vulnerability (CVSS 9.8) in Google Android, published December 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in :unknown: Pixel-family specific:2021-12-05.