How to fix CVE-2025-52909?

Within 24 hours: Identify and inventory all Samsung devices with affected Exynos Wi-Fi chipsets (models 980, 850, 1280, 1330, 1380, 1480, 1580, W920, W930, W1000) across corporate mobile fleets, IoT infrastructure, and BYOD ecosystems using MDM/EMM systems and network scanning. Within 7 days: Contact Samsung Security Support for emergency patch ETA and interim firmware availability; implement network segmentation isolating Wi-Fi interfaces from critical systems; enable Wi-Fi packet inspection/filtering on enterprise gateways to block malformed NL80211 vendor commands. Within 30 days: Deploy vendor-released patches to 100% of affected devices immediately upon Samsung release; conduct forensic analysis for signs of exploitation; re-baseline network trust for affected device populations.

Is N A affected by CVE-2025-52909?

CVE-2025-52909 is a critical buffer overflow in Samsung Exynos Wi-Fi drivers affecting multiple chipset generations that allows unauthenticated remote code execution through network-accessible Wi-Fi interfaces.

CVE-2025-52909

EUVD-2025-209267 CRITICAL

2026-04-07 mitre

GHSA-j23g-4xqg-g9jh

9.8

CVSS 3.1

CVSS Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Apr 07, 2026 - 15:00 vuln.today

EUVD ID Assigned

Apr 07, 2026 - 15:00 euvd

EUVD-2025-209267

CVE Published

Apr 07, 2026 - 00:00 nvd

CRITICAL 9.8

Description

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.

Analysis

Buffer overflow in Samsung Exynos Wi-Fi drivers (980, 850, 1280, 1330, 1380, 1480, 1580, W920, W930, W1000) allows unauthenticated remote attackers to execute arbitrary code with high integrity/confidentiality impact through malformed NL80211 vendor command ioctl messages. Improper input validation enables network-accessible exploitation without user interaction. CVSS 9.8 critical severity. No public exploit identified at time of analysis.

Technical Context

Root cause: CWE-120 buffer overflow triggered via NL80211 vendor command handler processing within kernel Wi-Fi driver stack. Improper bounds checking on ioctl message parameters permits memory corruption. Affects Exynos mobile/wearable chipset firmware across multiple generations. CVSS AV:N indicates remotely exploitable attack surface through wireless network proximity.

Affected Products

Samsung Exynos processors: 980, 850, 1280, 1330, 1380, 1480, 1580 (mobile), W920, W930, W1000 (wearable). Impacts Wi-Fi driver components in chipset firmware. No standardized CPE available. Affects devices using listed Exynos variants.

Remediation

Vendor-released patch available per Samsung advisory at https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-52909/. Device manufacturers using affected Exynos chipsets must integrate Samsung-provided firmware updates into system images. End users should apply OEM security patches when available through device update mechanisms. For unpatched devices, disable Wi-Fi functionality to eliminate network attack surface until firmware updates deploy. Monitor Samsung Security Updates portal for chipset-specific remediation timelines and affected device model lists.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.0

CVSS: +49

POC: 0

CVE-2025-52909 vulnerability details – vuln.today

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CVE-2025-52909

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CVE-2025-52909

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