CVSS 7.8 · HIGH

CVE-2025-47408

Memory corruption when another driver calls an IOCTL with invalid input/output buffer.

Analysis

This memory corruption vulnerability affects Qualcomm FastConnect firmware used in many mobile devices and laptops. While rated high severity, it involves a local driver interaction via IOCTL, meaning it is likely used for privilege escalation rather than remote attacks. It is handled by standard OEM security updates and does not directly impact web or backend development practices.

Severity

Score: 7.8(HIGH)

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AV: LOCAL

AC: LOW

PR: LOW

UI: NONE

S: UNCHANGED

C: HIGH

I: HIGH

A: HIGH

Weakness (CWE): CWE-822CWE-119

EPSS

Probability of exploitation (next 30 days): 0.0001 (0.0%)

Percentile: 3.2%

EPSS: 2026-05-06

Affects

qualcomm:fastconnect_6200_firmwarequalcomm:fastconnect_6200qualcomm:fastconnect_6900_firmwarequalcomm:fastconnect_6900qualcomm:fastconnect_7800_firmwarequalcomm:fastconnect_7800qualcomm:iqx5121_firmwarequalcomm:iqx5121qualcomm:iqx7181_firmwarequalcomm:iqx7181qualcomm:qca0000_firmwarequalcomm:qca0000qualcomm:sc8380xp_firmwarequalcomm:sc8380xpqualcomm:sd865_5g_firmwarequalcomm:sd865_5gqualcomm:sm6250_firmwarequalcomm:sm6250qualcomm:snapdragon_7c_compute_firmwarequalcomm:snapdragon_7c_computequalcomm:snapdragon_7c_gen_2_compute_firmwarequalcomm:snapdragon_7c_gen_2_computequalcomm:snapdragon_xr2_5g_firmwarequalcomm:snapdragon_xr2_5gqualcomm:snapdragon_xr2\+_gen_1_firmwarequalcomm:snapdragon_xr2\+_gen_1qualcomm:wcd9380_firmwarequalcomm:wcd9380qualcomm:wcd9385_firmwarequalcomm:wcd9385qualcomm:wsa8810_firmwarequalcomm:wsa8810qualcomm:wsa8815_firmwarequalcomm:wsa8815qualcomm:wsa8840_firmwarequalcomm:wsa8840qualcomm:wsa8845_firmwarequalcomm:wsa8845qualcomm:wsa8845h_firmwarequalcomm:wsa8845h

Technical description

Memory corruption when another driver calls an IOCTL with invalid input/output buffer.

Published: 5/4/2026, 5:16:21 PM

Last modified: 5/6/2026, 6:03:00 PM

References

https://docs.qualcomm.com/product/publicresources/securitybulletin/may-2026-bulletin.html

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

Categorías de impacto que evalúa la IA

widely_deployed_infra — kernel Linux, OpenSSL, glibc, k8s, Docker, nginx, OpenSSH.

popular_dev_tooling — Node.js, Python, Go, React, Next.js, librerías comunes de npm/pip.

common_consumer_software — Chrome, Firefox, Windows, macOS, apps móviles populares.

enterprise_saas — GitHub, GitLab, Atlassian, Salesforce, Cisco, Fortinet, Ivanti.

niche_software — CMS regionales, herramientas de hobby, librerías de poco uso.

not_relevant — firmware específico de proveedor, software descontinuado.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.