CVE-2023-27308

Local privilege escalation via undisclosed buffer mishandling

Published Feb 14, 2024 · Updated Aug 14, 2024

Improper buffer restrictions in Intel Thunderbolt DCH drivers before 88 allow privileged local users to escalate privileges on Windows. Intel identifies the driver buffer restriction but does not disclose the affected file, routine, buffer operation, or attacker-controlled input. Exploitation requires an already privileged local account and can alter integrity across a security boundary while interrupting availability.

CVSS severity4.6
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper buffer restrictions in Intel Thunderbolt DCH drivers before 88 allow privileged local users to escalate privileges on Windows. Intel identifies the driver buffer restriction but does not disclose the affected file, routine, buffer operation, or attacker-controlled input. Exploitation requires an already privileged local account and can alter integrity across a security boundary while interrupting availability.

The record

CVE
CVE-2023-27308
Published
Feb 14, 2024
Updated
Aug 14, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Thunderbolt DCH driver for Windows
Classifications
CWE-92, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 2024Record 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=before version 88

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel Thunderbolt DCH driver for Windowsversion=before version 88

Published CVSS scores

4.6Intel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
4.6NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-92DEPRECATED: Improper Sanitization of Custom Special Characters
T1068Exploitation for Privilege Escalation

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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