CVE-2026-13198

Kernel memory corruption via event-waiter race

Published Aug 14, 2026 · Updated Aug 14, 2026

Race condition in KUNBUS piControl 2.6.2 allows local users to corrupt kernel memory and disclose adjacent kernel data. Concurrent event waiters issue crafted requests through /dev/piControl0 without proper synchronization, corrupting the kernel heap and event-list state. Access to the character device and multiple local threads is required; successful exploitation can expose a small amount of kernel memory and crash the host.

CVSS severity5.9
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in KUNBUS piControl 2.6.2 allows local users to corrupt kernel memory and disclose adjacent kernel data. Concurrent event waiters issue crafted requests through /dev/piControl0 without proper synchronization, corrupting the kernel heap and event-list state. Access to the character device and multiple local threads is required; successful exploitation can expose a small amount of kernel memory and crash the host.

The record

CVE
CVE-2026-13198
Published
Aug 14, 2026
Updated
Aug 14, 2026
Vendor
KUNBUS
Product
piControl
Classifications
CWE-362, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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?

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

  1. Affected versionversion=0 <=2.6.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

KUNBUS · piControlversion=0 <=2.6.2

Published CVSS scores

5.9Nozomi Networks LabsCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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