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Full vulnerability report · 2026
CVE-2026-65093High confidence

NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape

NVIDIA · OpenShell

9.9CriticalCVSS 3.1
Recommended action
Within 7 days

Critical technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.80% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs NVIDIA OpenShell and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  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: Within 3 daysRemediation target: Within 90 days

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.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-65093 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityopenshell: NVIDIA OpenShell: sandbox escape leading to code execution and privilege escalation
7 fixed

The vendor explicitly identifies these products or versions as containing the fix.

  • openshell-0:0.0.116-0.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • openshell-0:0.0.116-0.2.hum1@src as a component of Red Hat Hardened Images
  • openshell-0:0.0.116-0.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • openshell-gateway-0:0.0.116-0.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • openshell-gateway-0:0.0.116-0.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • python3-openshell-0:0.0.116-0.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • python3-openshell-0:0.0.116-0.2.hum1@x86_64 as a component of Red Hat Hardened Images
Summary
A flaw was found in NVIDIA OpenShell. A remote authenticated attacker can exploit this vulnerability to escape the isolated sandbox environment. Successful exploitation can lead to arbitrary code execution, privilege escalation, and unauthorized access to data on the underlying host system.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
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-2026-66092

No EUVD known-exploited evidence

NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.

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
9.9 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Critical technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.

What

NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.

Why

The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

What

NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.

Why

The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

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
a network path → Uncontrolled Search Path Element → obtain information outside the intended access boundary
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-427 ↗

CWE-427: Uncontrolled Search Path Element. The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.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.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkCWE-427
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-66092Official EUVD mapping

NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.

Official EUVD record ↗
CSIRT Italia · Italian · risolte-vulnerabilita-in-prodotti-nvidia-2Risolte vulnerabilità in prodotti NVIDIA

Aggiornamenti di sicurezza NVIDIA risolvono 28 vulnerabilità, di cui 2 con gravità "critica" e 17 con gravità "alta", che interessano i prodotti NemoClaw, OpenShell, Unified Fabric Manager (UFM) Enterprise e DGX Spark. Tali vulnerabilità, qualora sfruttate, potrebbero consentire a un utente malintenzionato di eseguire codice arbitrario, elevare i propri privilegi, alterare i dati, accedere a informazioni sensibili e compromettere la disponibilità dei sistemi interessati.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031334NVIDIAのOpenShellにおける制御されていない検索パスの要素に関する脆弱性

NVIDIA OpenShell for Linuxには、攻撃者がサンドボックスから脱出する可能性がある脆弱性が存在します。この脆弱性が悪用されると、コードが実行され、権限が昇格し、データが改ざんされるとともに、情報が漏洩する可能性があります。

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.
Patch available
Affected
OpenShell: 0 to 0.0.33
Fixed
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 25 Aug 2026 · Last source change 26 Aug 2026, 15:14 UTC · CWE-427 · Uncontrolled Search Path Element

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-26
European sourceENISA EUVD · EUVD-2026-66092
Product sourceCNA
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    0 to 0.0.33 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    0 to 0.0.33 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
    Red Hat Product Security ↗
  2. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-65093 to remediation: access.redhat.com/CVE-2026-65093.
    Before
    remediation: access.redhat.com/CVE-2026-65093
    After
    remediation: access.redhat.com/CVE-2026-65093
    Red Hat Product Security ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Red Hat Product Security ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    openshell.src as a component of Red Hat Hardened Images
    After
    Fixed: openshell-0:0.0.116-0.2.hum1@aarch64 as a component of Red Hat Hardened Images; openshell-0:0.0.116-0.2.hum1@src as a component of Red Hat Hardened Images; openshell-0:0.0.116-0.2.hum1@x86_64 as a component of Red Hat Hardened Images; openshell-gateway-0:0.0.116-0.2.hum1@aarch64 as a component of Red Hat Hardened Images; openshell-gateway-0:0.0.116-0.2.hum1@x86_64 as a component of Red Hat Hardened Images; python3-openshell-0:0.0.116-0.2.hum1@aarch64 as a component of Red Hat Hardened Images; python3-openshell-0:0.0.116-0.2.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  5. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  6. Vendor guidanceAuthoritative vendor guidance changed: added patch: github.com/5872; added remediation: github.com/5872.
    Before
    no authoritative guidance recorded
    After
    patch: github.com/5872 · remediation: github.com/5872
    psirt@nvidia.com ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    0 to 0.0.33 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    0 to 0.0.33 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  8. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    psirt@nvidia.com ↗
  9. ENISA EUVD mappingEUVD-2026-66092 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-66092"}
    ENISA EUVD ↗
  10. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-66092↗Red Hat Product Security security advisory↗Patch or update reference↗NVD record↗Official CVE record (CNA and ADP data)↗
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-2026-65093 · cve.blacktree.nl