BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2022
CVE-2021-33096High confidence

n/a Intel(R) 82599 Ethernet Controllers and Adapters — Exposure of Resource to Wrong Sphere

Unknown · Intel(R) 82599 Ethernet Controllers and Adapters

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 5 May 2025

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.28% for the current model date.

Compensating controls

  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Unknown Intel(R) 82599 Ethernet Controllers and Adapters and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

12 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinux-aws-6.14Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcp-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-hwe-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-intelAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatency-hwe-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracle-6.14Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2021-19811

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

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.

What

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

The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

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

The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Exposure of Resource to Wrong Sphere → disrupt the affected service
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-668 ↗

CWE-668: Exposure of Resource to Wrong Sphere. The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Denial of serviceCWE-668
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2022-0320Intel Ethernet Controller: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen in Intel Ethernet Controller ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220216Security Bulletin 16 Feb 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 16 Feb 2022, published on 16 February 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0326Multiples vulnérabilités dans les produits VMware

cord?id=CVE-2021-0183 Référence CVE CVE-2021-0308 https://www.cve.org/CVERecord?id=CVE-2021-0308 Référence CVE CVE-2021-20255 https://www.cve.org/CVERecord?id=CVE-2021-20255 Référence CVE CVE-2021-21240 https://www.cve.org/CVERecord?id=CVE-2021-21240 Référence CVE CVE-2021-22930 https://www.cve.org/CVERecord?id=CVE-2021-22930 Référence CVE CVE-2021-23840 https://www.cve.org/CVERecord?id=CVE-2021-23840 Référence CVE CVE-2021-26934 https://www.cve.org/CVERecord?id=CVE-2021-26934 Référence CVE CVE-2021-31615 https://www.cve.org/CVERecord?id=CVE-2021-31615 Référence CVE CVE-2021-31879 https://www.cve.org/CVERecord?id=CVE-2021-31879 Référence CVE CVE-2021-33096 https://www.cve.org/CVERecord?id=CVE-2021-33096 Référence CVE CVE-2021-33110 https://www.cve.org/CVERecord?id=CVE-2021-33110 Référence CVE CVE-2021-33113 https://www.cve.org/CVERecord?id=CVE-2021-33113 Référence CVE CVE-2021-33114 https://www.cve.org/CVERecord?id=CVE-2021-33114 Référence CVE CVE-2021-33115 https://www.cve.org/CVERecord?id=CVE-2021-33115 Référence CVE CVE-2021-33139 https://www.cve.org/CVERecord?id=CVE-2021-33139 Référence CVE CVE-2021-33155 https://www.cve.org/CVERecord?id=CVE-2021-33155 Référence CVE CVE-2021-3714 https://www.cve.org/CVERecord?id=CVE-2021-3714 Référence CVE CVE-2021-3735 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0316Multiples vulnérabilités dans les produits VMware

cord?id=CVE-2021-0183 Référence CVE CVE-2021-0308 https://www.cve.org/CVERecord?id=CVE-2021-0308 Référence CVE CVE-2021-20255 https://www.cve.org/CVERecord?id=CVE-2021-20255 Référence CVE CVE-2021-21240 https://www.cve.org/CVERecord?id=CVE-2021-21240 Référence CVE CVE-2021-22930 https://www.cve.org/CVERecord?id=CVE-2021-22930 Référence CVE CVE-2021-23840 https://www.cve.org/CVERecord?id=CVE-2021-23840 Référence CVE CVE-2021-26934 https://www.cve.org/CVERecord?id=CVE-2021-26934 Référence CVE CVE-2021-31615 https://www.cve.org/CVERecord?id=CVE-2021-31615 Référence CVE CVE-2021-31879 https://www.cve.org/CVERecord?id=CVE-2021-31879 Référence CVE CVE-2021-33096 https://www.cve.org/CVERecord?id=CVE-2021-33096 Référence CVE CVE-2021-33110 https://www.cve.org/CVERecord?id=CVE-2021-33110 Référence CVE CVE-2021-33113 https://www.cve.org/CVERecord?id=CVE-2021-33113 Référence CVE CVE-2021-33114 https://www.cve.org/CVERecord?id=CVE-2021-33114 Référence CVE CVE-2021-33115 https://www.cve.org/CVERecord?id=CVE-2021-33115 Référence CVE CVE-2021-33139 https://www.cve.org/CVERecord?id=CVE-2021-33139 Référence CVE CVE-2021-33155 https://www.cve.org/CVERecord?id=CVE-2021-33155 Référence CVE CVE-2021-3714 https://www.cve.org/CVERecord?id=CVE-2021-3714 Référence CVE CVE-2021-3735 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-127Multiples vulnérabilités dans les produits Intel

rg/CVERecord?id=CVE-2021-0175 Référence CVE CVE-2021-0176 https://www.cve.org/CVERecord?id=CVE-2021-0176 Référence CVE CVE-2021-0177 https://www.cve.org/CVERecord?id=CVE-2021-0177 Référence CVE CVE-2021-0178 https://www.cve.org/CVERecord?id=CVE-2021-0178 Référence CVE CVE-2021-0179 https://www.cve.org/CVERecord?id=CVE-2021-0179 Référence CVE CVE-2021-0183 https://www.cve.org/CVERecord?id=CVE-2021-0183 Référence CVE CVE-2021-23152 https://www.cve.org/CVERecord?id=CVE-2021-23152 Référence CVE CVE-2021-33061 https://www.cve.org/CVERecord?id=CVE-2021-33061 Référence CVE CVE-2021-33068 https://www.cve.org/CVERecord?id=CVE-2021-33068 Référence CVE CVE-2021-33096 https://www.cve.org/CVERecord?id=CVE-2021-33096 Référence CVE CVE-2021-33101 https://www.cve.org/CVERecord?id=CVE-2021-33101 Référence CVE CVE-2021-33107 https://www.cve.org/CVERecord?id=CVE-2021-33107 Référence CVE CVE-2021-33110 https://www.cve.org/CVERecord?id=CVE-2021-33110 Référence CVE CVE-2021-33113 https://www.cve.org/CVERecord?id=CVE-2021-33113 Référence CVE CVE-2021-33114 https://www.cve.org/CVERecord?id=CVE-2021-33114 Référence CVE CVE-2021-33115 https://www.cve.org/CVERecord?id=CVE-2021-33115 Référence CVE CVE-2021-33119 https://www.cve.org/CVERecord?id=CVE-2021-33119 Référence CVE CVE-2021-33120 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-005234Intel(R) 82599 Ethernet Controller および Adapter における誤った領域へのリソースの漏えいに関する脆弱性

Intel(R) 82599 Ethernet Controller および Adapter には、誤った領域へのリソースの漏えいに関する脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
Intel(R) 82599 Ethernet Controllers and Adapters: See references
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 9 Feb 2022 · Last source change 5 May 2025, 16:51 UTC · CWE-668 · Exposure of Resource to Wrong Sphere

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2021-19811
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2021-19811↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2021-33096 · cve.blacktree.nl