CVE-2025-66363Network attack vector

Baseband service interruption via uninitialized message memory

Published Mar 3, 2026 · Updated Mar 3, 2026

Improper initialization in Samsung Exynos 2200 LBS allows remote attackers to interrupt baseband service through DL NAS Transport messages. The LBS message-handling path consumes memory associated with a DL NAS Transport message without first checking that the memory has been initialized. No authentication or user interaction is required; published evidence establishes an availability impact but does not identify affected firmware versions or the exact failure mode.

CVSS severity7.5
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper initialization in Samsung Exynos 2200 LBS allows remote attackers to interrupt baseband service through DL NAS Transport messages. The LBS message-handling path consumes memory associated with a DL NAS Transport message without first checking that the memory has been initialized. No authentication or user interaction is required; published evidence establishes an availability impact but does not identify affected firmware versions or the exact failure mode.

The record

CVE
CVE-2025-66363
Published
Mar 3, 2026
Updated
Mar 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-665, T1642
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 3, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-665Improper Initialization
T1642Endpoint Denial of Service

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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