Cyber Resilience

CVE-2025-21436

High

Published: 07 April 2025

Published
07 April 2025
Modified
20 August 2025
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0021 43.5th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-21436 is a high-severity Use After Free (CWE-416) vulnerability in Qualcomm Fastconnect 7800 Firmware. Its CVSS base score is 7.8 (High).

Operationally, ranked at the 43.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.

CWE(s)
CWE-416

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

qualcomm
fastconnect 7800 firmware
all versions
qualcomm
qmp1000 firmware
all versions
qualcomm
sm8735 firmware
all versions
qualcomm
sm8750 firmware
all versions
qualcomm
sm8750p firmware
all versions
qualcomm
snapdragon 8 gen 3 mobile platform firmware
all versions
qualcomm
snapdragon w5\+ gen 1 wearable platform firmware
all versions
qualcomm
sw5100 firmware
all versions
qualcomm
sw5100p firmware
all versions
qualcomm
sxr2330p firmware
all versions
+15 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References