Critical Qualcomm chipset flaws could allow remote code execution on affected devices

Qualcomm has released its May 2026 security bulletin with fixes for critical vulnerabilities that could allow remote code execution on affected products.

The most severe issue is CVE-2026-25254, a critical flaw in Qualcomm Software Center. Qualcomm describes it as an improper authorization issue that can lead to remote code execution through the SocketIO interface.

A second critical bug, CVE-2026-25293, affects Power Line Communication firmware. It involves a buffer overflow caused by incorrect authorization and affects the Qualcomm Snapdragon QCA7005 platform.

Why the Qualcomm May 2026 update matters

These vulnerabilities matter because Qualcomm chips and software components sit inside phones, connected devices, automotive systems, networking products, and other embedded hardware.

Users usually cannot patch these components directly from Qualcomm. Device makers, car manufacturers, router vendors, and other OEMs need to integrate the fixes into firmware or software updates.

That makes the rollout uneven. A patched Qualcomm component does not always mean every affected device receives an update immediately.

Key issue	Component	Severity	Impact
CVE-2026-25254	Qualcomm Software Center	Critical, CVSS 9.8	Remote code execution through SocketIO
CVE-2026-25293	PLC firmware	Critical, CVSS 9.6	Buffer overflow with high confidentiality, integrity, and availability impact
CVE-2026-25255	Qualcomm Package Manager and Software Center	High, CVSS 8.8	Privilege escalation through exposed dangerous function
CVE-2026-25262	Primary Bootloader	Critical in Qualcomm bulletin	Memory corruption while processing crafted ELF files

The two critical RCE risks

CVE-2026-25254 stands out because it does not require authentication. The flaw sits in Qualcomm Software Center and involves improper authorization around the SocketIO interface.

If an affected implementation exposes the vulnerable service, an attacker could use it to run code remotely. That is why the 9.8 severity rating deserves attention from enterprise teams and device vendors.

CVE-2026-25293 carries a slightly lower 9.6 score, but it still poses serious risk. It affects PLC firmware and can be exploited from an adjacent network, which makes segmentation and device isolation important until updates arrive.

Other Qualcomm flaws fixed in the same bulletin

The bulletin also covers several high-severity memory corruption and denial-of-service bugs across boot, camera, DSP, WLAN, automotive GPU, automotive audio, and Windows WLAN host components.

Several of these flaws require local access or a specific device state, so they do not carry the same immediate risk as the remote code execution bugs. Still, they can matter in chained attacks where an attacker first gains a foothold through another weakness.

WLAN flaws such as CVE-2025-47401 and CVE-2025-47403 can trigger transient denial-of-service conditions. DSP, camera, audio, and GPU bugs can affect stability and memory safety on vulnerable platforms.

• CVE-2025-47401 affects WLAN HAL and can cause a transient denial of service.
• CVE-2025-47403 affects WLAN firmware during roaming activity.
• CVE-2025-47405 affects the camera component through invalid output buffers.
• CVE-2025-47407 affects DSP service through a race condition.
• CVE-2026-24082 affects automotive GPU through a use-after-free issue.
• CVE-2026-25266 affects Windows WLAN host through an exposed dangerous function.

What devices could be affected

The affected product list is broad because Qualcomm supplies components across multiple markets. The May 2026 bulletin covers products tied to mobile, automotive, wireless, modem, IoT, and embedded use cases.

Reports based on Qualcomm’s bulletin mention platforms such as Snapdragon 8 Elite, Snapdragon 8 Gen 3, FastConnect 7800, Snapdragon Auto 5G modem products, and QCA7005.

The exact risk depends on the device, the component used, the firmware version, and whether the vulnerable feature is enabled or reachable. A phone, router, vehicle system, or industrial device may need a vendor-specific update even if the Qualcomm patch already exists.

Device category	What users should watch for
Android phones and tablets	Monthly security updates from the device maker
Routers and smart home hardware	Firmware updates from the hardware vendor
Automotive systems	Updates from automakers or service networks
Enterprise devices	OEM advisories and asset inventory checks
Industrial or embedded systems	Vendor firmware releases and network segmentation controls

How users and organizations should respond

End users should install the latest security update from their phone, router, laptop, vehicle, or device manufacturer as soon as it becomes available.

Organizations should identify devices that use affected Qualcomm components, then check vendor advisories for firmware updates. Asset inventory matters here because chipset vulnerabilities can hide inside devices that security teams do not patch as often as laptops or servers.

Network teams should also reduce exposure where possible. Devices using PLC, Wi-Fi, automotive, or embedded Qualcomm components should not sit on flat networks when they can be segmented.

• Check the device maker’s update page for May 2026 or newer security updates.
• Prioritize internet-facing and network-adjacent devices first.
• Segment embedded, IoT, automotive, and operational technology devices.
• Monitor for unusual traffic from devices using Qualcomm network components.
• Retire products that no longer receive firmware or security updates.

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