Incorrect default permissions in Intel Xeon processor memory controller configurations…
Priority LOW 38CWE-276Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Incorrect default permissions in some Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX may allow a privileged user to potentially enable escalation of privilege via local access.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX | See references | — | No fix listed | CNA |
- Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX Vendor— Affected See references Fixed in — No fix listed CNA
CPE names CISA-ADP · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:intel:3rd_generation_intel_xeon_scalable_processor_family:606a6:*:*:*:*:*:*:* | 606a6 | — | Intel |
| cpe:2.3:h:intel:4th_generation_intel_xeon_processor_scalable_family:806f7:*:*:*:*:*:*:* | 806f7 | — | Intel |
| cpe:2.3:h:intel:4th_generation_intel_xeon_processor_scalable_family:806f8:*:*:*:*:*:*:* | 806f8 | — | Intel |
| cpe:2.3:h:intel:5th_generation_intel_xeon_processor_scalable_family:c06f2:*:*:*:*:*:*:* | c06f2 | — | Intel |
| cpe:2.3:h:intel:xeon_d_processor:606c1:*:*:*:*:*:*:* | 606c1 | — | Intel |
- cpe:2.3:h:intel:3rd_generation_intel_xeon_scalable_processor_family:606a6:*:*:*:*:*:*:* Versions 606a6 — ·Intel
- cpe:2.3:h:intel:4th_generation_intel_xeon_processor_scalable_family:806f7:*:*:*:*:*:*:* Versions 806f7 — ·Intel
- cpe:2.3:h:intel:4th_generation_intel_xeon_processor_scalable_family:806f8:*:*:*:*:*:*:* Versions 806f8 — ·Intel
- cpe:2.3:h:intel:5th_generation_intel_xeon_processor_scalable_family:c06f2:*:*:*:*:*:*:* Versions c06f2 — ·Intel
- cpe:2.3:h:intel:xeon_d_processor:606c1:*:*:*:*:*:*:* Versions 606c1 — ·Intel
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21820
- 2026-10-03 Alias added: GHSA-643q-8gx3-hf55
References
Sources
- CVE-2024-21820 · CVE Program
- CVE-2024-21820 · NVD
- FIRST EPSS
- GHSA-643q-8gx3-hf55 · GitHub Advisory Database · CC BY 4.0
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