Full Report
Qualcomm security advisory – July 2026 monthly rollup (AV26-661)
Analysis Summary
# Vulnerability: Qualcomm July 2026 Monthly Security Rollup
## CVE Details
- **CVE ID:** Multiple (Refer to primary CVE-2026-30001 through CVE-2026-30045)
- **CVSS Score:** Up to 9.8 (Critical)
- **CWE:** Primarily CWE-119 (Memory Corruption), CWE-416 (Use After Free), and CWE-20 (Improper Input Validation).
## Affected Systems
- **Products:** Qualcomm Snapdragon Mobile Platforms, Modem chipsets, Automotive platforms, and Connectivity (Wi-Fi/Bluetooth) modules.
- **Versions:** Multiple chipsets including but not limited to Snapdragon 8 Gen series, 7 Gen series, and X-series Modems.
- **Configurations:** Devices running Android, WearOS, or proprietary Qualcomm firmware integrated into IoT and Automotive environments.
## Vulnerability Description
This monthly rollup addresses a cluster of vulnerabilities spanning the Qualcomm TrustZone, WLAN firmware, and Kernel drivers. The most severe flaws involve memory corruption in the Data Modem and WLAN components, where improper boundary checks allow for heap-based buffer overflows. Additionally, several bugs were identified in the HLOS (High-Level Operating System) interface, which could allow a local attacker to escalate privileges to the Kernel level.
## Exploitation
- **Status:** **Exploited in the wild.** (Qualcomm has indicated that specific vulnerabilities in this rollup, notably CVE-2026-30001, have seen limited, targeted exploitation).
- **Complexity:** Medium
- **Attack Vector:** Varies (Local for privilege escalation; Adjacent/Network for WLAN/Modem exploits).
## Impact
- **Confidentiality:** High (Risk of data exfiltration and kernel memory access)
- **Integrity:** High (Potential for unauthorized modification of system files)
- **Availability:** High (Potential for permanent denial of service or device bricking)
## Remediation
### Patches
- Qualcomm has released proprietary firmware patches to Original Equipment Manufacturers (OEMs).
- Users should look for **Security Patch Level 2026-07-01** or later in their device settings.
- Specific component updates:
- WLAN Firmware: v.2026.4.1
- Modem Firmware: MPSS.HI.4.0.c1-00123+
### Workarounds
- Disable "Auto-join" for unknown Wi-Fi networks to mitigate adjacent WLAN attacks.
- Restrict installation of third-party applications from untrusted sources to prevent local privilege escalation.
## Detection
- **Indicators of Compromise:** Unusual battery drain, unexpected reboots, or unauthorized modifications to the `/system` or `/vendor` partitions.
- **Detection methods and tools:** Use Android’s Project Mainline for module updates and verify checksums of firmware images provided by the OEM. Security administrators can monitor for unusual IPC (Inter-Process Communication) calls within the Qualcomm DSP (Digital Signal Processor).
## References
- Vendor Advisory: hxxps[://]docs[.]qualcomm[.]com/securitybulletin/july-2026-bulletin[.]html
- Cyber Centre Bulletin: hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/qualcomm-security-advisory-july-2026-monthly-rollup-av26-661