Improper access control in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of pr
Improper access control in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
- Published
- Aug 10, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 5th percentile
- CWE
- CWE-284
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Report tools
Action score
26
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 6.7
- CNA · intel
- 7.2
- 0.5 point gap
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| intel | atom c3338r firmware | cpe:2.3:o:intel:atom_c3338r_firmware |
| intel | atom c3338r | cpe:2.3:h:intel:atom_c3338r |
| intel | atom c3436l firmware | cpe:2.3:o:intel:atom_c3436l_firmware |
| intel | atom c3436l | cpe:2.3:h:intel:atom_c3436l |
| intel | atom c3558r firmware | cpe:2.3:o:intel:atom_c3558r_firmware |
| intel | atom c3558r | cpe:2.3:h:intel:atom_c3558r |
| intel | atom c3758r firmware | cpe:2.3:o:intel:atom_c3758r_firmware |
| intel | atom c3758r | cpe:2.3:h:intel:atom_c3758r |
| intel | atom c3336 firmware | cpe:2.3:o:intel:atom_c3336_firmware |
| intel | atom c3336 | cpe:2.3:h:intel:atom_c3336 |
| intel | atom c3308 firmware | cpe:2.3:o:intel:atom_c3308_firmware |
| intel | atom c3308 | cpe:2.3:h:intel:atom_c3308 |
and 188 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- intel atom c3308 firmwareall versions
- intel atom c3336 firmwareall versions
- intel atom c3338 firmwareall versions
- intel atom c3338r firmwareall versions
- intel atom c3436l firmwareall versions
- intel atom c3508 firmwareall versions
- intel atom c3538 firmwareall versions
- intel atom c3558 firmwareall versions
- intel atom c3558r firmwareall versions
- intel atom c3708 firmwareall versions
- intel atom c3750 firmwareall versions
- intel atom c3758 firmwareall versions
- intel atom c3758r firmwareall versions
- intel atom c3808 firmwareall versions
- intel atom c3830 firmwareall versions
- intel atom c3850 firmwareall versions
- intel atom c3858 firmwareall versions
- intel atom c3950 firmwareall versions
- intel atom c3955 firmwareall versions
- intel atom c3958 firmwareall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (intel). Independent of NVD's CPE analysis and usually ahead of it.
n/a Intel(R) Processors
- See referencesaffected
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00813.html
- security.netapp.com/advisory/ntap-20230824-0001/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.