What’s Vulnerable › Vulnerabilities

CVE-2021-33096

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-09 · updated 2026-06-17
• Weakness: CWE-668

Description

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.

Affected products

• Intel 82599Eb Firmware: before 5.13.4 — fixed in 5.13.4
• Intel 82599En Firmware: before 5.13.4 — fixed in 5.13.4
• Intel 82599Es Firmware: before 5.13.4 — fixed in 5.13.4

How to fix

Upgrade to a fixed version: Intel 82599Eb Firmware 5.13.4; Intel 82599En Firmware 5.13.4; Intel 82599Es Firmware 5.13.4. Check the vendor advisory for mitigations.

References

• https://security.netapp.com/advisory/ntap-20220210-0010/
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00571.html
• https://security.netapp.com/advisory/ntap-20220210-0010/
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00571.html

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