Exposure of resource to wrong sphere in Intel 82599 Ethernet Controllers and Adapters
Priority LOW 25CWE-668Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-668 and the CVSS impact.
Summary
Improper isolation of shared resources in network on chip for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentially enable denial of service via local access.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00277 20th 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(R) 82599 Ethernet Controllers and Adapters | See references | — | No fix listed | CNA |
- Intel(R) 82599 Ethernet Controllers and Adapters Vendor— Affected See references Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:intel:82599en_firmware:*:*:*:*:*:*:*:* | before 5.13.4 | Vulnerable | Intel |
| cpe:2.3:h:intel:82599en:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:82599eb_firmware:*:*:*:*:*:*:*:* | before 5.13.4 | Vulnerable | Intel |
| cpe:2.3:h:intel:82599eb:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
| cpe:2.3:o:intel:82599es_firmware:*:*:*:*:*:*:*:* | before 5.13.4 | Vulnerable | Intel |
| cpe:2.3:h:intel:82599es:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Intel |
- cpe:2.3:o:intel:82599en_firmware:*:*:*:*:*:*:*:* Versions before 5.13.4 Vulnerable ·Intel
- cpe:2.3:h:intel:82599en:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:82599eb_firmware:*:*:*:*:*:*:*:* Versions before 5.13.4 Vulnerable ·Intel
- cpe:2.3:h:intel:82599eb:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Intel
- cpe:2.3:o:intel:82599es_firmware:*:*:*:*:*:*:*:* Versions before 5.13.4 Vulnerable ·Intel
- cpe:2.3:h:intel:82599es:-:*:*:*:*:*:*:* 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 →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33096
- 2026-10-03 Alias added: GHSA-rchm-qq78-745r
References
More Intel 82599eb Firmware vulnerabilities
- TI-2021-12655 Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2021-33096 · CVE Program
- CVE-2021-33096 · NVD
- FIRST EPSS
- GHSA-rchm-qq78-745r · GitHub Advisory Database · CC BY 4.0
- CVE-2021-33096 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences