What is CVE-2025-52909?

CVE-2025-52909 is a critical-severity vulnerability in Samsung Exynos 1280, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-04-07.

How severe is CVE-2025-52909?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Samsung Exynos 1280

CVE-2025-52909

An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1280, 1330, 1380, 1480, 1580, W920, W930, and W1000. Incorrect Handling of the NL80211 vendor command leads to a buffer overflow via a certain ioctl message, issue 2 of 2.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (39.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2025-52909?: CVE-2025-52909 is a critical-severity vulnerability in Samsung Exynos 1280, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-04-07.
How severe is CVE-2025-52909?: Critical severity. CVSS v3 base score is 9.8 out of 10.