CVE-2025-27891

CRITICAL

Samsung Exynos and Modem Firmware - Out-of-bounds Read via Malformed NAS Packets

Title source: llm

Description

An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, W1000, Modem 5123, Modem 5300, Modem 5400. The lack of a length check leads to out-of-bounds reads via malformed NAS packets.

References (2)

Core 2

Core References

Vendor Advisory

https://semiconductor.samsung.com/support/quality-support/product-security-updates/

Vendor Advisory

https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-27891/

Scores

CVSS v3 9.1

EPSS 0.0040

EPSS Percentile 31.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-125

Status published

Products (17)

samsung/exynos_1080_firmware

samsung/exynos_1280_firmware

samsung/exynos_1330_firmware

samsung/exynos_1380_firmware

samsung/exynos_1480_firmware

samsung/exynos_2100_firmware

samsung/exynos_2200_firmware

samsung/exynos_2400_firmware

samsung/exynos_850_firmware

samsung/exynos_980_firmware

... and 7 more

Published May 14, 2025

Tracked Since Feb 18, 2026