Out-of-bounds read in Intel Atom Processors
Priority LOW 26CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Out of bounds read under complex microarchitectural condition in memory subsystem for some Intel Atom(R) Processors may allow authenticated user to potentially enable information disclosure or cause denial of service via network access.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0095 61st 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
- Partial
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 Atom(R) Processors | See references | — | No fix listed | CNA |
- Intel Atom(R) Processors Vendor— Affected See references Fixed in — No fix listed CNA
CPE configurations NVD · 50
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:intel:atom_p5942b_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_p5942b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_p5931b_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_p5931b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_p5962b_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_p5962b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_p5921b_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_p5921b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:xeon_d1700_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:xeon_d1700:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
- cpe:2.3:o:intel:atom_p5942b_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_p5942b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_p5931b_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_p5931b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_p5962b_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_p5962b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_p5921b_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_p5921b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:xeon_d1700_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:xeon_d1700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
Show 40 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:intel:xeon_d2700_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:xeon_d2700:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:core_i5-l16g7_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:core_i5-l16g7:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:core_i3-l13g4_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:core_i3-l13g4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:pentium_j6425_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:pentium_j6425:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:pentium_n6415_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:pentium_n6415:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:celeron_j6413_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:celeron_j6413:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:celeron_n6211_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:celeron_n6211:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6413e_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6413e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6425re_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6425re:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6427fe_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6427fe:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6212re_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6212re:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6200fe_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6200fe:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6211e_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6211e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:atom_x6425e_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:atom_x6425e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:pentium_silver_n6005_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:pentium_silver_n6005:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:pentium_silver_n6000_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:pentium_silver_n6000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:celeron_n4505_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:celeron_n4505:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:celeron_n4500_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:celeron_n4500:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:celeron_n5105_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:celeron_n5105:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:celeron_n5100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Intel |
| cpe:2.3:h:intel:celeron_n5100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
- cpe:2.3:o:intel:xeon_d2700_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:xeon_d2700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:core_i5-l16g7_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:core_i5-l16g7:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:core_i3-l13g4_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:core_i3-l13g4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:pentium_j6425_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:pentium_j6425:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:pentium_n6415_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:pentium_n6415:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:celeron_j6413_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:celeron_j6413:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:celeron_n6211_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:celeron_n6211:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6413e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6413e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6425re_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6425re:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6427fe_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6427fe:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6212re_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6212re:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6200fe_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6200fe:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6211e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6211e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:atom_x6425e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:atom_x6425e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:pentium_silver_n6005_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:pentium_silver_n6005:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:pentium_silver_n6000_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:pentium_silver_n6000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:celeron_n4505_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:celeron_n4505:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:celeron_n4500_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:celeron_n4500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:celeron_n5105_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:celeron_n5105:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:celeron_n5100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Intel
- cpe:2.3:h:intel:celeron_n5100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix yet |
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33120
- 2026-10-03 Alias added: GHSA-43wc-84x4-9vfc
References
More Intel Atom P5921b Firmware vulnerabilities
- TI-2022-05609 Insufficient granularity of access control in out-of-band management in some Intel(R)… CVSS 3.1HIGH 7.5
- TI-2022-00003 Hardware debug modes and processor INIT setting that allow override of locks for some… CVSS 3.1MEDIUM 6.8
- TI-2022-05624 Improper isolation of shared resources in some Intel(R) Processors may allow a privileged… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2021-33120 · CVE Program
- CVE-2021-33120 · NVD
- FIRST EPSS
- GHSA-43wc-84x4-9vfc · GitHub Advisory Database · CC BY 4.0
- CVE-2021-33120 · Red Hat security data · CC BY 4.0
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