CVE-2025-9815Public exploit

Privileged SMC access via unauthenticated XPC connections

Published Sep 2, 2025 · Updated Sep 2, 2025

Missing authentication in batteryKid 2.0 through 2.1 allows local users to perform privileged SMC operations through its XPC helper. The NSXPCListener delegate in PrivilegeHelper.swift accepts every incoming connection without validating the client, exposing helper methods that read and write SMC keys. Any local low-privileged process can reach the root-privileged helper after installation, enabling unauthorized hardware-control operations with system-wide consequences.

CVSS severity7.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in batteryKid 2.0 through 2.1 allows local users to perform privileged SMC operations through its XPC helper. The NSXPCListener delegate in PrivilegeHelper.swift accepts every incoming connection without validating the client, exposing helper methods that read and write SMC keys. Any local low-privileged process can reach the root-privileged helper after installation, enabling unauthorized hardware-control operations with system-wide consequences.

The record

CVE
CVE-2025-9815
Published
Sep 2, 2025
Updated
Sep 2, 2025
Vendor
alaneuler
Product
batteryKid
Classifications
CWE-306, CWE-287, T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0
  2. Affected versionversion=2.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

alaneuler · batteryKidversion=2.0; version=2.1

Published CVSS scores

7.8VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
6.8VulDBAV:L/AC:L/Au:S/C:C/I:C/A:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-287Improper Authentication
T1548Abuse Elevation Control Mechanism

Public exploit references

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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