CVE-2025-21444 Buffer Copy Without Checking Size of Input (`Classic Buffer Overflow`) in Data HLOS - QX
A buffer overflow in Qualcomm Snapdragon EMAC allows attackers to corrupt memory, potentially leading to code execution or privilege escalation.
- 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-2025-21444?
CVE-2025-21444 is a high-severity memory corruption vulnerability in Qualcomm Qam8255p Firmware, published on 8 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Memory corruption while copying the result to the transmission queue in EMAC.
Weakness: CWE-120
Which versions are affected by CVE-2025-21444?
It affects 27 products.
Products include Qualcomm Qam8255p Firmware, Qualcomm Qam8295p Firmware, Qualcomm Qam8620p Firmware, Qualcomm Qam8650p Firmware, Qualcomm Qam8775p Firmware, Qualcomm Qamsrv1h Firmware and 21 more.
How do I fix CVE-2025-21444?
No fix has been published for CVE-2025-21444 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-2025-21444 being exploited?
There is no known exploitation of CVE-2025-21444 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Qam8255p Firmware
Sources
Also known as GHSA-m8gc-25vp-c8r7.