CVE-2021-33126
Description
Improper access control in the firmware for some Intel(R) 700 and 722 Series Ethernet Controllers and Adapters before versions 8.5 and 1.5.5 may allow a privileged user to potentially enable denial of service via local access.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Improper access control in some Intel 700/722 Series Ethernet firmware allows privileged users to trigger denial of service via local access.
Vulnerability
An improper access control vulnerability exists in the firmware for certain Intel(R) 700 and 722 Series Ethernet Controllers and Adapters before firmware versions 8.5 and 1.5.5. This issue is present in the firmware of affected devices and requires local access to exploit [1].
Exploitation
To exploit this vulnerability, an attacker must have privileged local access to the system running the affected Intel Ethernet controller or adapter. No user interaction from a non-privileged user is required; the attacker can directly leverage their elevated privileges to trigger the flaw [1].
Impact
Successful exploitation could allow the privileged user to cause a denial of service (DoS) condition. The impact is limited to availability, as the vulnerability is classified with a low CVSS base score of 3.3 (AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L) [1].
Mitigation
Intel has released firmware updates to address this vulnerability. Affected products should be updated to firmware versions 8.5 (for 700 series) or 1.5.5 (for 722 series) or later [1].
AI Insight generated on May 25, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Intel/700 and 722 Series Ethernet Controllers and Adaptersdescription
- Range: <8.5
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00593.htmlmitrex_refsource_MISC
News mentions
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