Improper buffer restrictions in some Intel NUC BIOS firmware may allow a privileged user to…
CVE-2023-42429 is a high-severity vulnerability in Intel NUC BIOS firmware, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected Intel NUC BIOS firmware versions: See references. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.15% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Intel NUC BIOS firmware you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on intel.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Intel NUC BIOS firmware | Intel NUC BIOS firmware | See references | Not stated |
| Intel | Nuc 7 Essential Pc Nuc7cjysal Firmware | jyglkcpx.0071 | Not stated |
| Intel | Nuc 7 Essential Nuc7cjysamn Firmware | jyglkcpx.0071 | Not stated |
| Intel | Nuc Kit Nuc7cjyhn Firmware | jyglkcpx.0071 | Not stated |
| Intel | Nuc Kit Nuc7cjyh Firmware | jyglkcpx.0071 | Not stated |
| Intel | Nuc Kit Nuc7pjyhn Firmware | jyglkcpx.0071 | Not stated |
| Intel | Nuc Kit Nuc7pjyh Firmware | jyglkcpx.0071 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (intel.com) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
Improper buffer restrictions in some Intel NUC BIOS firmware may allow a privileged user to potentially enable escalation of privilege via local access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Intel NUC BIOS firmware
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
Spotted an error? Tell us.