BaseFortify

Publication date: 2026-01-05

Last updated on: 2026-01-09

Assigner: MITRE

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, 1580, 9110, W920, W930, W1000, Modem 5123, Modem 5300, Modem 5400. The lack of a length check leads to out-of-bounds writes via malformed NAS packets.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-05

Last Modified

2026-01-09

Generated

2026-07-06

AI Q&A

2026-01-05

EPSS Evaluated

2026-07-05

NVD

CVE-2025-27807

EUVD

EUVD-2026-0807

Affected Vendors & Products

Vendor	Product	Version / Range
samsung	exynos_990_firmware	*
samsung	exynos_990	*
samsung	exynos_980_firmware	*
samsung	exynos_980	*
samsung	exynos_850_firmware	*
samsung	exynos_850	*
samsung	exynos_1080_firmware	*
samsung	exynos_1080	*
samsung	exynos_2100_firmware	*
samsung	exynos_2100	*
samsung	exynos_1280_firmware	*
samsung	exynos_1280	*
samsung	exynos_2200_firmware	*
samsung	exynos_2200	*
samsung	exynos_1330_firmware	*
samsung	exynos_1330	*
samsung	exynos_1380_firmware	*
samsung	exynos_1380	*
samsung	exynos_1480_firmware	*
samsung	exynos_1480	*
samsung	exynos_1580_firmware	*
samsung	exynos_1580	*
samsung	exynos_2400_firmware	*
samsung	exynos_2400	*
samsung	exynos_9110_firmware	*
samsung	exynos_9110	*
samsung	exynos_w930_firmware	*
samsung	exynos_w930	*
samsung	exynos_w920_firmware	*
samsung	exynos_w920	*
samsung	exynos_w1000_firmware	*
samsung	exynos_w1000	*
samsung	modem_5123_firmware	*
samsung	modem_5123	*
samsung	modem_5300_firmware	*
samsung	modem_5300	*
samsung	modem_5400_firmware	*
samsung	modem_5400	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

CVE-2025-27807 is a high-severity vulnerability in multiple Samsung Exynos processors and modems. It occurs in the NAS (Non-Access Stratum) component due to a missing length check, which allows out-of-bounds write operations via malformed NAS packets. This means attackers can write data beyond the intended buffer limits, potentially causing memory corruption and enabling further exploitation. [1]

Impact Analysis

This vulnerability can lead to memory corruption on affected Samsung Exynos processors and modems. An attacker exploiting this flaw could potentially execute arbitrary code, cause system crashes, or disrupt device functionality, which may compromise device security and stability. [1]

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