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CVE Record

CVE-2021-33061: Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an...

Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentially enable denial of service via local access.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a local denial-of-service issue in Intel 82599 Ethernet Controllers and Adapters. A user who already has authenticated local access could potentially disrupt network adapter availability. The public bundle rates it medium severity and shows no CISA KEV listing or active exploitation evidence.

Executive priority

Treat as a targeted availability risk, not an internet-wide emergency. Prioritize business-critical systems where adapter disruption could cause outages, especially shared infrastructure with many local users.

Technical view

The CVE describes insufficient control flow management affecting Intel 82599 Ethernet Controllers and Adapters. CVSS 3.1 is 5.5 with local attack vector, low complexity, low privileges, no user interaction, unchanged scope, no confidentiality or integrity impact, and high availability impact.

Likely exposure

Exposure is most relevant on systems using Intel 82599 Ethernet controllers or adapters where lower-privileged local users can authenticate. Remote-only exposure is not supported by the provided CVSS vector.

Exploitation context

The source bundle does not cite public exploit activity, and KEV is false. Exploitation requires authenticated local access, so practical risk depends on local account controls and workload sensitivity to network adapter disruption.

Researcher notes

Evidence is limited to the CVE metadata and referenced advisories in the provided bundle. No CWE, exact vulnerable versions, patch details, or exploit evidence are included in the prompt sources.

Mitigation direction

  • Review Intel advisory INTEL-SA-00571 for affected versions and vendor remediation guidance.
  • Review NetApp advisory NTAP-20220210-0010 if NetApp systems are in scope.
  • Prioritize remediation on shared servers, virtualization hosts, and high-availability network paths.
  • Limit local interactive access to systems using affected Intel 82599 hardware.

Validation and detection

  • Inventory hosts using Intel 82599 Ethernet Controllers and Adapters.
  • Check installed firmware, driver, and platform versions against Intel advisory details.
  • Confirm whether any NetApp-managed assets are covered by the NetApp advisory.
  • Review local user access on affected hosts for unnecessary privileges.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-33061 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2021-33061Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aIntel(R) 82599 Ethernet Controllers and AdaptersSee referencesListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.