What is CVE-2026-25271?

CVE-2026-25271 is a high-severity vulnerability in Qualcomm Cologne, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.8/10. Published 2026-07-06.

How severe is CVE-2026-25271?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Qualcomm Cologne

CVE-2026-25271

Memory Corruption when processing asynchronous input parameters due to improper handling of modified values between check and use.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.001 (0.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Qualcomm Cologne
Qualcomm Cologne_firmware
Qualcomm Fastconnect_6900
Qualcomm Fastconnect_6900_firmware
Qualcomm Fastconnect_7800
Qualcomm Fastconnect_7800_firmware
Qualcomm Iqx5121
Qualcomm Iqx5121_firmware
Qualcomm Iqx7181
Qualcomm Iqx7181_firmware

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

product-security@qualcomm.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-25271?: CVE-2026-25271 is a high-severity vulnerability in Qualcomm Cologne, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.8/10. Published 2026-07-06.
How severe is CVE-2026-25271?: High severity. CVSS v3 base score is 7.8 out of 10.