CVE-2025-53966

Memory corruption via mishandled NL80211 vendor commands

Published Jan 5, 2026 · Updated Jan 5, 2026

Buffer overflow in the Wi-Fi driver of Samsung Exynos 1380, 1480, 2400, and 1580 allows local users to corrupt memory via IOCTL input. The driver incorrectly handles an NL80211 vendor command while processing an IOCTL message, copying input without adequate bounds enforcement. Local access is required; successful exploitation can expose or alter device data or crash the affected device.

CVSS severity8.4
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the Wi-Fi driver of Samsung Exynos 1380, 1480, 2400, and 1580 allows local users to corrupt memory via IOCTL input. The driver incorrectly handles an NL80211 vendor command while processing an IOCTL message, copying input without adequate bounds enforcement. Local access is required; successful exploitation can expose or alter device data or crash the affected device.

The record

CVE
CVE-2025-53966
Published
Jan 5, 2026
Updated
Jan 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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