← Vulnerability feed

Vulnerability record · CVE-2021-1961 · published 9 September 2021

CVE-2021-1961: Qualcomm apq8009 firmware classic buffer overflow vulnerability

Qualcomm · Apq8009 Firmware

Possible buffer overflow due to lack of offset length check while updating the buffer value in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

6.7 CVSS 3.1 Medium EPSS 0.39% · top 69.8% CWE-120 · Classic buffer overflow
6.7CVSS 3.1 base score, v2 4.6
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
113Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Possible buffer overflow due to lack of offset length check while updating the buffer value in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

113 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin PatchVendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin PatchVendor Advisory

Track CVE-2021-1961 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.6CVE-2025-21479Qualcomm GPU micronode memory corruption via unauthorized command executionQualcomm chipsets contain an incorrect authorization flaw in the GPU micronode that allows memory corruption when a specific sequence of commands is …KEVEPSS 0.84%analysed8.6CVE-2025-21480Qualcomm GPU micronode memory corruption via unauthorized command executionA memory corruption flaw in Qualcomm's GPU micronode is caused by incorrect authorization (CWE-863), allowing an unauthorized command sequence to be …KEVEPSS 0.46%analysed7.8CVE-2026-21385Qualcomm chipset firmware memory corruption via alignment integer overflowA memory corruption flaw in Qualcomm chipset firmware arises from an integer overflow when alignments are used for memory allocation (CWE-190). It af…KEVEPSS 1.3%analysed7.8CVE-2023-33107Qualcomm Graphics Linux integer overflow memory corruptionCVE-2023-33107 is an integer overflow (CWE-190) in Qualcomm Graphics Linux that causes memory corruption when a shared virtual memory region is assig…KEVEPSS 0.72%analysed7.8CVE-2023-33063Qualcomm DSP Services use-after-free memory corruptionCVE-2023-33063 is a use-after-free memory corruption flaw in Qualcomm DSP Services, triggered during a remote call from the high-level operating syst…KEVEPSS 0.57%analysed7.8CVE-2022-22071Qualcomm chipset shell memory use-after-free via IOCTL munmapA use-after-free exists in Qualcomm Snapdragon and related chipset firmware when process shell memory is freed through an IOCTL munmap call while pro…KEVEPSS 0.46%analysed7.8CVE-2020-11261Qualcomm Snapdragon chipsets memory corruption via improper allocation size checkQualcomm Snapdragon firmware fails to return an error when a user application requests a very large memory allocation, leading to memory corruption (…KEVEPSS 1.6%analysed7.8CVE-2021-1905Qualcomm Snapdragon chipsets use-after-free in memory mapping handlingA use-after-free flaw exists in multiple Qualcomm Snapdragon chipset families due to improper handling of memory mapping when multiple processes oper…KEVEPSS 1.5%analysed

Source: NIST National Vulnerability Database (record CVE-2021-1961), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.