CVE-2021-1961

MEDIUM

Qualcomm Snapdragon Firmware - Buffer Overflow via Unchecked Offset Length

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-1961. PoCs published by tamirzb.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2021-1961, targeting a vulnerability in Qualcomm's TrustZone. The exploit leverages a memory corruption issue in the QSEECom API to achieve arbitrary kernel read/write, leading to privilege escalation and SELinux bypass.

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

Exploits (1)

nomisec WORKING POC 121 stars
by tamirzb · poc
https://github.com/tamirzb/CVE-2021-1961

This repository contains a functional exploit for CVE-2021-1961, targeting a vulnerability in Qualcomm's TrustZone. The exploit leverages a memory corruption issue in the QSEECom API to achieve arbitrary kernel read/write, leading to privilege escalation and SELinux bypass.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Qualcomm TrustZone (QSEECom API)
Auth required
Prerequisites: Access to /dev/qseecom · Root or system privileges via su or Magisk · Android device with Qualcomm chipset
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 6.7
EPSS 0.0038
EPSS Percentile 29.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-120
Status published
Products (50)
qualcomm/apq8009_firmware
qualcomm/apq8053_firmware
qualcomm/apq8096au_firmware
qualcomm/aqt1000_firmware
qualcomm/ar8031_firmware
qualcomm/ar8035_firmware
qualcomm/csra6620_firmware
qualcomm/csra6640_firmware
qualcomm/fsm10055_firmware
qualcomm/fsm10056_firmware
... and 40 more
Published Sep 09, 2021
Tracked Since Feb 18, 2026