Raw vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-34349 is a medium-severity Race Condition During Access to Alternate Channel (CWE-421) vulnerability in Intel Nuc Essential Nuc11Atkc2 Firmware. Its CVSS base score is 4.6 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked at the 1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-38429
Vulnerability Data
Race condition in some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable escalation of privilege via local access.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Accurate timestamps from internal clocks enable detection of race conditions by providing reliable event ordering in audit logs.
Coordination of concurrent security activities reduces the probability that shared resources will be accessed simultaneously without proper synchronization.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Enforcing least-privilege access permissions directly prevents unauthorized actors from using an exposed alternate channel.
Protecting networks and environments from unauthorized logical access mitigates exposure of alternate channels.
Integrating secure development practices throughout the SDLC prevents introduction of alternate-channel race conditions.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Network segmentation and hardening reduce the exposure of alternate channels to unauthorized actors.
Segregating networks limits the reach of alternate communication paths to unintended parties.
Secure development practices can identify and eliminate race conditions involving alternate channels.
A.8.27 mandates security-by-design principles (defense-in-depth, least privilege, fail securely, assume-breach, distrust-external-input, zero-trust verification) plus design reviews that can identify and block many race-condition-on-alternate-channel flaws, but leaves a bounded remainder (e.g. timing windows in complex concurrent designs or overlooked channels not caught by review).
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-362, a class-level weakness, and none of its children carries one either.