CVE-2026-87765

Local denial of service via invalid frequency indexes

Published Oct 12, 2026 · Updated Oct 12, 2026

Input validation in the Unisoc kernel APsys DVFS driver allows local users to disrupt the system via a malformed frequency index. The driver processes frequency indexes without proper validation, permitting out-of-bounds reads or hardware register corruption. Local privileges are required; the record does not specify whether the resulting denial of service is a hang, crash, or reboot.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Input validation in the Unisoc kernel APsys DVFS driver allows local users to disrupt the system via a malformed frequency index. The driver processes frequency indexes without proper validation, permitting out-of-bounds reads or hardware register corruption. Local privileges are required; the record does not specify whether the resulting denial of service is a hang, crash, or reboot.

The record

CVE
CVE-2026-87765
Published
Oct 12, 2026
Updated
Oct 12, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 12, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5UnisocCVSS:3.1/AV:L/AC:L/PR:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
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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