CVE-2025-31718Network attack vector

Unauthenticated modem crash via improper input validation

Published Oct 11, 2025 · Updated Oct 11, 2025

Improper input validation in UNISOC modem components on affected Android devices allows remote attackers to crash the system. The vendor identifies the modem as the locus but does not disclose which input is insufficiently validated or the failing operation. No authentication or user interaction is required, and the published CVSS vector limits demonstrated impact to service interruption rather than privilege gain.

CVSS severity7.5
High
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in UNISOC modem components on affected Android devices allows remote attackers to crash the system. The vendor identifies the modem as the locus but does not disclose which input is insufficiently validated or the failing operation. No authentication or user interaction is required, and the published CVSS vector limits demonstrated impact to service interruption rather than privilege gain.

The record

CVE
CVE-2025-31718
Published
Oct 11, 2025
Updated
Oct 11, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 2025Record 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

7.5UNISOCCVSS: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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

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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