CVE-2025-21479: Qualcomm Multiple Chipsets incorrect authorization in GPU micronode

CVE-2025-21479 · Severity: critical · CVSS 8.6 · Exploited in the wild · Published 2025-06-03

A security vulnerability exists in several Qualcomm chipsets used in mobile devices and connectivity hardware. This flaw allows unauthorized commands to be executed on the Graphics Processing Unit (GPU), which can lead to memory corruption and potential system takeover. This vulnerability has been observed being used in real-world attacks, making it a high priority for patching to protect user data and device integrity.

Technologies: Qualcomm FastConnect 6800 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Multiple Chipsets. Vendors: Qualcomm.

Quick answers

Is CVE-2025-21479 exploited in the wild?
Yes. CVE-2025-21479 is known to be exploited in the wild, first recorded on 3 June 2025. Treat it as urgent.
How severe is CVE-2025-21479?
Critical severity, with a CVSS score of 8.6, published 3 June 2025.
Which products and versions are affected?
Qualcomm Multiple Chipsets Firmware Multiple chipsets including SD855, FastConnect 6200/6700/6800/6900/7800, QCM4490, QCS4490, and others.
Is there a fix for CVE-2025-21479?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-21479 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2025-21479?
Check whether you run Qualcomm FastConnect 6800 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is classified as an Incorrect Authorization (CWE-863) issue within the GPU micronode of multiple Qualcomm chipsets. It is triggered when a specific sequence of commands is executed, allowing for unauthorized command execution that results in memory corruption. The attack vector is local, requiring user interaction (UI:R) but potentially leading to a scope change (S:C) with high impact on confidentiality, integrity, and availability. This flaw is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation. Patches are available via Qualcomm's June 2025 security bulletin.

Affected products

  • Qualcomm Multiple Chipsets Firmware Multiple chipsets including SD855, FastConnect 6200/6700/6800/6900/7800, QCM4490, QCS4490, and others

Timeline

  • 2025-06-03: advisory: Qualcomm published the security bulletin and NVD entry was created.
  • 2025-06-03: kev added: CISA added the vulnerability to the Known Exploited Vulnerabilities catalog.
  • 2025-06-03: exploited: Vulnerability reported as exploited in the wild.

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