Input validation error in Samsung products - CVE-2025-66366

Vulnerability identifier: #VU136968

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2025-66366

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Samsung

Affected software:
Exynos 1280
Exynos 1330
Exynos 1380
Exynos 1480
Exynos 2400
Exynos 1580
Exynos 2500
Exynos Modem 5300
Exynos Modem 5400
Exynos Modem 5410

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect handling of unauthenticated downlink RRC Setup messages. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://semiconductor.samsung.com/content/semiconductor/global/support/quality-support/product-security-updates/cve-2025-66366/