CVE-2020-0530

Local privilege escalation via improper buffer restrictions

Published Mar 12, 2020 · Updated Aug 4, 2024

Buffer overflow in Intel NUC Firmware allows local users to escalate privileges through local access to an affected device. Intel identifies only improper buffer restrictions in the system firmware and does not disclose the affected firmware component, buffer operation, or attacker-controlled input. Exploitation requires existing local low-privileged access and can cross a security boundary to compromise confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Intel NUC Firmware allows local users to escalate privileges through local access to an affected device. Intel identifies only improper buffer restrictions in the system firmware and does not disclose the affected firmware component, buffer operation, or attacker-controlled input. Exploitation requires existing local low-privileged access and can cross a security boundary to compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2020-0530
Published
Mar 12, 2020
Updated
Aug 4, 2024
Vendor
Intel
Product
Intel NUC Firmware
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=See advisory https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00343.html

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Intel · Intel NUC Firmwareversion=See advisory https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00343.html

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8IntelCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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