Intel AI Reference Models up to 3.4.0 protection mechanism

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.6 | $0-$5k | 0.79- |
Summary
A vulnerability, which was classified as problematic, was found in Intel AI Reference Models up to 3.4.0. The impacted element is an unknown function. Such manipulation leads to protection mechanism. This vulnerability is referenced as CVE-2026-21400. The attack can only be performed from a local environment. No exploit is available.
Details
A vulnerability was found in Intel AI Reference Models up to 3.4.0 and classified as problematic. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a protection mechanism vulnerability. Using CWE to declare the problem leads to CWE-693. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. Impacted is confidentiality, integrity, and availability. CVE summarizes:
Protection mechanism failure for some Intel(R) AI Reference Models before version v3.4.1 within Ring 3: User Applications may allow an escalation of privilege. Unprivileged software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires passive user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
The advisory is available at intel.com. This vulnerability is handled as CVE-2026-21400 since 01/13/2026. The exploitation is known to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/11/2026).
Upgrading to version 3.4.1 eliminates this vulnerability.
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Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.intel.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.8VulDB Meta Temp Score: 4.6
VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Protection mechanismCWE: CWE-693
CAPEC: 🔒
ATT&CK: 🔒
Physical: Partially
Local: Yes
Remote: Partially
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: AI Reference Models 3.4.1
Timeline
01/13/2026 CVE reserved08/11/2026 Advisory disclosed
08/11/2026 VulDB entry created
08/11/2026 VulDB entry last update
Sources
Vendor: intel.comAdvisory: intel.com
Status: Confirmed
CVE: CVE-2026-21400 (🔒)
GCVE (CVE): GCVE-0-2026-21400
GCVE (VulDB): GCVE-100-388670
Entry
Created: 08/11/2026 23:18Changes: 08/11/2026 23:18 (54)
Complete: 🔍
Cache ID: 216::103
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