CVE-2025-21476 Buffer Copy Without Checking Size of Input in Computer Vision
Memory corruption in Qualcomm Snapdragon firmware allows attackers to execute arbitrary code or escalate privileges during Trusted Virtual Machine handshakes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-21476?
CVE-2025-21476 is a high-severity memory corruption vulnerability in Qualcomm Qca6391 Firmware, published on 24 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption when passing parameters to the Trusted Virtual Machine during the handshake.
Weakness: CWE-120
Which versions are affected by CVE-2025-21476?
It affects 42 products.
Products include Qualcomm Qca6391 Firmware, Qualcomm Qca6698aq Firmware, Qualcomm Qcm5430 Firmware, Qualcomm Qcm6490 Firmware, Qualcomm Qcm8550 Firmware, Qualcomm Qcn9011 Firmware and 36 more.
How do I fix CVE-2025-21476?
No fix has been published for CVE-2025-21476 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-21476 being exploited?
There is no known exploitation of CVE-2025-21476 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Qca6391 Firmware
- CVE-2023-21630 Integer Overflow in Multimedia Framework
- CVE-2021-35134 Memory corruption in Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
- CVE-2021-30283 Denial of service in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile
- CVE-2023-21655 Integer Overflow or Wraparound in Display
- CVE-2021-1918 Information disclosure in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile
Sources
Also known as GHSA-m9g8-x7f2-2hgc.