CVE-2021-30271

Possible null pointer dereference in trap handler due to lack of thread ID validation before...

7.3 High

Possible null pointer dereference in trap handler due to lack of thread ID validation before dereferencing it in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: High

Exploit likelihood

0.16%Down 0.3 points since Jan 3, 2022

What each source reports

CVE List Score used 7.3

Record: CVE-2021-30271
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Updated: 2026-11-02

EUVDEUVD-2021-17202 7.3

Record: EUVD-2021-17202
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mg73-f6mr-q5cw No score

Possible null pointer dereference in trap handler due to lack of thread ID validation before...

Record: GHSA-mg73-f6mr-q5cw
Weakness: CWE-476
Updated: 2026-11-02

NVD 7.3

Record: CVE-2021-30271
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-476
Updated: 2026-11-02

Affected products

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History

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

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

In short

CVE-2021-30271 is a high vulnerability (CVSS 7.3) in Qualcomm, Inc. Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer Iot, Snapdragon Industrial Iot, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure And Networking, published January 3, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 4th percentile. No source names a fixed version.