CVE-2021-1909

Buffer overflow occurs in trusted applications due to lack of length check of parameters in...

7.3 High

Buffer overflow occurs in trusted applications due to lack of length check of parameters in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon 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: High
Integrity: Low
Availability: Low

Exploit likelihood

0.16%Down 0.3 points since Sep 9, 2021

What each source reports

CVE List Score used 7.3

Record: CVE-2021-1909
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-02

EUVDEUVD-2021-7373 7.3

Record: EUVD-2021-7373
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hpj4-57qp-2v2m No score

Buffer overflow occurs in trusted applications due to lack of length check of parameters in...

Record: GHSA-hpj4-57qp-2v2m
Weakness: CWE-120
Updated: 2026-11-02

NVD 7.3

Record: CVE-2021-1909
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
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-120
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-2021-1909 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 Iot, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure And Networking, published September 9, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.