Out-of-bounds write in Samsung products - CVE-2025-62818

Vulnerability identifier: #VU125800

CSH Severity: High

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

CVE-ID: CVE-2025-62818

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Samsung

Affected software:
Exynos 980
Exynos 850
Exynos 1080
Exynos 2100
Exynos 1280
Exynos 2200
Exynos 1330
Exynos 1380
Exynos 1480
Exynos 2400
Exynos 1580
Exynos 2500
Exynos 9110
Exynos W920
Exynos W930
Exynos W1000
Exynos Modem 5123
Exynos Modem 5300
Exynos Modem 5400
Exynos 990

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in SMS. A remote attacker can trigger an out-of-bounds write and execute arbitrary code on the target system.

Install updates from vendor's website.

• https://semiconductor.samsung.com/content/semiconductor/global/support/quality-support/product-security-updates/cve-2025-62818/