Improper buffer restrictions in some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable information disclosure vi…

published 2023-11-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44817

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits: 0; none known

Improper buffer restrictions in some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable information disclosure via local access.

Patch / fix

fixed in 2

intel nuc6cayh_firmware ayaplcel.86a.0076
intel nuc6cays_firmware ayaplcel.86a.0076

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-08-14)

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
NVD	3.1	4.4	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

n/a Intel(R) NUC BIOS firmware

Classification

Weakness

CWE-92 DEPRECATED: Improper Sanitization of Custom Special Characters

References

intel.com /content/www/us/en/security-center/advisory/intel-sa-01001.html
vendor-advisory

Sources

CVE List CVE-2023-40220
NVD CVE-2023-40220

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Summary